bishop big pine
Read this first
Produced by a 12-agent research workflow on 2026-09-08, then put through an adversarial audit pass which found 140 problems across the twelve plans, 22 of them blocking. It is published WITH those findings attached, never without. Read the flags on a plan before the plan.
Researched 2026-09-08. This plan drew 8 findings, 1 of them blocking.
What the audit found wrong with this plan
blocking
Mount Sill is "the one partial exception" whose "west slopes from Palisade Basin are low class 2 and are the only genuinely non-technical summit line on this list" — with suggestedDays inviting the traveller to "attempt Mount Sill unroped and unguided."
Nothing supports class 2. The plan's own cited source (the Mount Sill Wikipedia page, in its sources list) states no YDS grade at all — this repo already fetched it and recorded the easiest_route as "Glacier climb & rock scramble" (HIKES.md, the ca-14ers class section), which is why Mount Sill is absent from data/ca-14er-classes.json. The repo's stated policy for exactly this case is "A missing class renders as nothing at all, never as an easy one — the gap between class 2 and class 4 is the gap between walking and exposure." The plan violates that policy by inventing the easy end of the gap. Standard references put Sill's easiest line at class 3 with a snowfield, and the source description contains the words "glacier" and "scramble." This is aimed at a traveller whose data/traveller.json sets maxClass 2 and says "No rock climbing and no technical mountaineering. Does not scramble on exposed rock, and does not carry or use an ice axe, crampons or a rope." The plan is also self-contradictory: Mount Sill appears in its own gearPeaks list, and the headline calls five of seven peaks roped climbs. Acting on this sends a person with no axe, no crampons and no scrambling tolerance alone, off-trail, above 13,000 ft, into terrain the plan elsewhere admits is glaciated — in a canyon it says has no cell service.
costly
Aiguille Extra and Lewis Peak are real objectives that belong to "a separate Lone Pine / Mount Whitney trip," backed by a permit entry marked confidence "verified" telling the traveller to enter the February Mt. Whitney lottery.
These are almost certainly data artifacts, not objectives. HIKES.md documents this exact bug: "Proximity alone credited five spires the Whitney Trail passes hundreds of feet beneath — Mount Muir, Discovery Pinnacle, two aiguilles and S'brutal Tower," and notes that Keeler Needle and "the aiguilles" have no easiest_route field on Wikipedia at all. Two completed tasks in this repo are "Fix false-positive summit credits on the Whitney tracks" and "Stop OSM climbing formations being named as summits." The plan correctly spots that the coordinates are 38 miles away but draws the wrong conclusion — it treats a known false positive as a trip to be scheduled rather than an entry to be deleted. The cost is concrete: the plan's own permit block states "One application per group or household" for the Whitney lottery, so following this advice spends the traveller's single annual Whitney lottery application, plus $15/person, on a 1,300 ft IV/V 5.10 big wall and a peak the plan's own unknowns section admits it could not confirm exists in any climbing guidebook. Marking that permit entry "verified" while simultaneously conceding the peak may not be real is the confidence error that makes it actionable.
costly
The plan is written throughout in the future tense about an upcoming 30 August – 7 September window, with 2026-specific conditions presented as current: Tioga opened 15 May 2026, fire restrictions "through 31 December 2026," the Wheeler Fire alert, "no Yosemite entry reservation is required in 2026," and "the early-September departures show as full."
Today is 8 September 2026 — that window closed yesterday. The plan never states which year it is planning. If it means 2026, the entire trip is unbookable. If it means 2027, then every condition it certifies is stale by a year: fire restrictions, the Wheeler Fire, campground status, glacier condition, guide schedules, the Tioga opening date, and Yosemite's reservation policy are all re-decided annually and none of them carry over. Worse, the two deadlines that actually govern a 2027 trip are never surfaced as dates to act on: the six-month-ahead permit release for a late-August entry date falls around late February 2027, and the plan's own Whitney lottery text closes 1 March. A reader who treats this document as current will miss both and lose the season.
costly
The acclimatisation plan: sleep one night at 8,000–9,800 ft, then Day 1 White Mountain Peak at 14,252 ft (~15 miles round trip) as "by far the best altitude preparation available," Day 2 Bishop Pass at 11,970 ft, then a four-day guided trip sleeping at 12,400 ft.
That is six consecutive active days with no rest day, starting from sea level, for a traveller whose data/traveller.json says pace "relaxed," typicalClimbingDays 3, "Optimal and unhurried over several days, not a peak-bagging sprint," and "Sleeps in town by default... because altitude ruins sleep." A ~15-mile, ~3,300 ft day topping out at 14,252 ft on the first full day after one night at 8–9k is an acclimatisation stressor, not merely preparation, and calling it the best available option overstates a genuinely debatable call. The failure mode is not a bad hike — it is arriving at the trailhead for a prepaid, non-refundable guided trip with altitude sickness, having spent the contingency day the plan itself says to build in. The Barcroft gate is also nearer 11,680 ft than the stated 12,000 ft, so the day carries several hundred feet more gain than budgeted.
costly
All seven permit entries carry confidence "verified," including "Leader and alternate names cannot be changed later, and permits cannot be transferred," the "$6 per permit plus $5 per person" fee, the 25/day and 36/day quotas, and "you must print the permit before 10:00 a.m. on the entry date or the reservation is cancelled as a no-show."
None of these were verifiable against the cited pages, and at least one is garbled in a way that costs money. The 10 a.m. rule conflates the historic requirement to pick up a permit in person by 10 a.m. with the current print-at-home system, where no such print deadline exists in that form. More damaging is the leader/alternate claim: the purpose of naming an alternate on an Inyo permit is precisely that the alternate may take the trip if the leader cannot. A traveller who believes the named leader is the only person who can use the permit may cancel a perfectly usable reservation and forfeit fees the plan itself says are non-refundable. Specific dollar figures and quota integers asserted as "verified" invite exactly this kind of reliance without a second check.
minor
"Your habitual 30 August – 7 September window is genuinely good for these peaks" — treated throughout as the traveller's window for this California trip, and driving the whole "late-season ice is the counterintuitive trap" analysis.
data/traveller.json records two different windows: colorado "Aug 30 – Sep 7, four years running" and california "late June – mid August." The plan imports the Colorado window into a California trip and never notices. This is not cosmetic — the plan's own strongest conditions warning, that the U-Notch and the glacier are blue ice with a hard bergschrund late in the season, is a direct consequence of the imported date. In the traveller's actual stated California window the east-side lines are in their normal season and the routing advice would change. The plan optimises hard around a constraint the profile does not impose.
minor
"Group size limit of 15 still applies and includes day use" is given as a single flat number covering the whole itinerary.
The recommended route crosses from Inyo National Forest over Bishop Pass into Kings Canyon National Park and then travels cross-country through Dusy and Palisade Basins — a jurisdiction change the plan correctly notices for bear canisters but not for group size. NPS cross-country group limits in these basins are smaller than the Forest Service trail limit (commonly 12, and lower in some off-trail zones). A party sized to 15 on the strength of this sentence could be non-compliant for the entire off-trail portion, which is where they will actually be.
minor
"Thunderbolt Col at about 12,400 ft" is used as the base camp name throughout the itinerary, cautions and suggestedDays.
The named feature at that location and elevation is Thunderbolt Pass. "Thunderbolt Col" is not the name on the topo or in the guidebooks. A traveller quoting it to a guide service, a ranger issuing the permit, or a mapping app will not get a clean match, and it undercuts the plan's credibility on the one logistical detail — where they sleep — that the rest of the itinerary hangs on.
The plan itself, unedited
In short
Getting there
When
Where to stay
Altitude
A shape for the days
Permits and fees
Confidence is the researching agent’s own claim about itself. Forty of seventy-three such claims across all twelve plans were marked “verified” by the agent that wrote them. Treat it as a lead, and open the source.
Overnight wilderness permit — Big Pine Creek North Fork (trail code JM23)verified
Big Pine Creek North Fork trailhead, Glacier Lodge Road (Palisade Glacier, Sam Mack Meadow, Gayley high camp — the east-side approach to Sill, Polemonium and North Palisade) — Reserved only on recreation.gov, permit 233262 ("Inyo National Forest - Wilderness Permits"). Quota season 1 May – 1 November limits entry to 25 people per day. 15 of those spaces release 6 months before the entry date; the remaining 10 release at 7:00 a.m. Pacific two weeks before the entry date. Fee is $6 per permit plus $5 per person (no per-night charge). You must print the permit before 10:00 a.m. on the entry date or the reservation is cancelled as a no-show. Leader and alternate names cannot be changed later, and permits cannot be transferred. Per-person fee is refunded only if you cancel 12 or more days out; the $6 is never refunded. No lottery — this is first-come booking.
https://www.fs.usda.gov/r05/inyo/permits/wilderness-permitsOvernight wilderness permit — Bishop Pass, South Lake (trail code JM21)verified
South Lake trailhead above Bishop — the west-side approach over Bishop Pass into Dusy Basin, Thunderbolt Col and Palisade Basin. This is the approach that avoids the glacier, and the one to use in your late-season window. — Same system: recreation.gov permit 233262, same $6 + $5 per person, same print-by-10 a.m. no-show rule. Quota is 36 people per day, 22 released 6 months ahead and 14 released at 7:00 a.m. Pacific two weeks ahead. Larger quota than Big Pine Creek North Fork, but it is also the busiest trailhead in the area.
https://www.fs.usda.gov/sites/nfs/files/publication/trail%20quota%20sheet.pdf_0.pdfDay use — no permit requiredverified
Both Big Pine Creek North Fork and Bishop Pass / South Lake — Inyo National Forest states plainly that day use does not require a permit on these trails; the only place a day-use wilderness permit is required is the Mt. Whitney Zone. So a car-to-car push needs nothing. Group size limit of 15 still applies and includes day use.
https://www.fs.usda.gov/r05/inyo/recreation/trails/big-pine-creek-north-fork-trailBear-resistant food storageverified
All camps on both approaches — On Big Pine Creek North Fork, food, trash and scented items must be in bear-proof containers or counterbalanced. On Bishop Pass / South Lake, Inyo NF states bear-resistant containers are required outright. Once you cross Bishop Pass into Kings Canyon National Park, the NPS requires an approved canister in the Dusy Basin and Palisade Basin area — all camps from Bishop Pass to the JMT junction in LeConte Canyon and all cross-country areas in Dusy and Palisade Basins — from the Friday before Memorial Day through 31 October. Thunderbolt Col sits in that zone, so carry a canister. Canisters can be rented at park and forest visitor centres.
https://www.nps.gov/seki/planyourvisit/canister-areas.htm?fullweb=1California Campfire Permit (for stoves) — and current Stage 1 fire restrictionsverified
The whole Inyo National Forest, through 31 December 2026 — Stage 1 restrictions prohibit any fire, campfire or stove fire except in a Forest Service ring or grill inside a listed developed recreation site. Holders of a California Campfire Permit may still use a portable gas, kerosene or pressurised-liquid stove or lantern outside developed sites, at least 5 ft from flammable material, with a shut-off valve. Get the free campfire permit before the trip. Separately, campfires are banned outright on the Big Pine Creek North Fork trail, and above 10,000 ft on the Bishop Pass trail, restrictions or not.
https://www.fs.usda.gov/r05/inyo/fire/info/fire-restrictionsMt. Whitney Zone permit and lotteryverified
Lewis Peak and Aiguille Extra ONLY — both sit inside the Mt. Whitney Zone above Trail Camp, not in the Palisades — A permit is required for day use as well as overnight anywhere in the Mt. Whitney Zone. Lottery applications open 1 February and close 1 March at recreation.gov/permits/445860; results post 15 March; winners must pay $15 per person and complete the reservation before 9:00 p.m. Pacific on 21 April or the win is revoked; leftover dates go on sale first-come at 7:00 a.m. Pacific on 22 April. Quota season 1 May – 1 November: 100 people per day for day use, 60 per day for the overnight Mt. Whitney Trail permit. One application per group or household. This is a different trip, from Lone Pine, and cannot be bolted onto a Bishop/Big Pine week on short notice.
https://www.fs.usda.gov/r05/inyo/wilderness/mount-whitneyCommercial/guided quota — handled by the guide service, not by youverified
Any guided ascent of North Palisade, Starlight, Polemonium, Sill or Thunderbolt — Guided trips run on a separate commercial quota (Big Pine Creek North Fork has a commercial quota of 15 alongside the public 25). You do not book the permit yourself — the outfitter does, and making your own non-commercial reservation does not secure space for a guided trip. Sierra Mountain Center states permits are included in its Palisade fourteener and Swiss Arête trip prices. Book the guide first, then build the rest of the week around their dates.
https://sierramountaincenter.com/programs/sierra-nevada-california-alpine-rock-climbs/the-california-fourteeners/Access
- — The two peaks that break this trip: OSM coordinates put Lewis Peak at 36.5734 N, -118.2900 W and Aiguille Extra at 36.5722 N, -118.2901 W — both on the Mount Whitney crest between Crooks Peak and Aiguille du Paquoir, about 61 km (38 miles) straight-line from North Palisade. They are not 7 miles from the Palisades; the five Palisade peaks really are packed into about 1.3 km of crest, and the other two belong to a Lone Pine trip. Drop them or split them out.
- — Glacier Lodge Road is paved from Big Pine to the road end. There are two different parking areas and they are not interchangeable: day-use parking is at the road end near Glacier Lodge; overnight backpackers use the large paved lot lower down near the pack station, which adds about a mile to the walk in.
- — South Lake Road (Hwy 168) is paved to a lot at the lake with day-use and some overnight spaces; extra overnight roadside parking is allowed near Parcher's.
- — Stage 1 fire restrictions are in effect across Inyo National Forest through 31 December 2026, and the Owens zone fire danger is posted as Very High.
- — An active incident, the Wheeler Fire (started 13 August 2026, Wheeler Crest north of Bishop), is on the Inyo alerts page with no end date and no published closure area — check the alerts page and the forest's Facebook feed before you drive up. No closure is currently posted for the Big Pine Canyon or Bishop Creek drainages.
- — Inyo NF notes the bridge across the Big Pine Creek South Fork was destroyed by an avalanche. That is the Middle Palisade approach, not yours, but do not plan a South Fork side day without checking first.
- — Tioga Pass (SR-120) is your direct drive from the Bay Area and is open — it opened 15 May 2026 and typically stays open into November. No Yosemite entry reservation is required in 2026.
- — Labor Day 2026 falls on Monday 7 September, the last day of your usual window. Expect the South Lake lot full, the two-week quota release gone in minutes, and town booked.
- — There is effectively no cell service in either canyon. Carry a satellite messenger.
Needs equipment, or a guide
- — North Palisade
- — Starlight Peak
- — Polemonium Peak
- — Mount Sill
- — Thunderbolt Peak
- — Aiguille Extra
- — Lewis Peak
Cautions
- — Read this first: the trip brief's "hardest standard route: YDS class 4" is wrong in a way that matters. Every one of the five Palisade peaks needs a rope. Sierra Mountain Center's own description of its Palisade fourteeners trip says it outright: "All peaks require roped travel and possibly the use of crampons and ice axes. Summit blocks include 5th class climbing." The class 4 figure comes from Wikipedia infoboxes for North Palisade and Thunderbolt and describes the approach chute, not the summit.
- — Peak by peak, unroped or not. North Palisade: NO — the LeConte route is class 4 with roped moves at the chockstones, and the U-Notch alternative is a glacier and an ice couloir. Guided routinely. Starlight Peak: NO — the summit is the "Milk Bottle", a 20 ft pillar at 5.4–5.6 with enormous exposure; rope and rope tricks are mandatory. Guided. Polemonium Peak: NO — low fifth class (rated 5.2 to 5.6 depending on source) for about 200 ft from the U-Notch, with a rappel descent. Guided. Thunderbolt Peak: NO — Southwest Chute #1 is class 3–4 scrambling, but the summit block is 5.7 to 5.9 depending on which side and whose grade, and is the crux of the whole climb. Guided. Mount Sill: the one partial exception — the east-side Swiss Arête crosses the Palisade Glacier roped, passes a bergschrund at Glacier Notch and climbs 5.6–5.9 rock, so that line is a NO; but the west slopes from Palisade Basin are low class 2 and are the only genuinely non-technical summit line on this list. Reaching them is a very long cross-country day from a Bishop Pass base camp. Aiguille Extra: NO, and not a peak-bagging objective at all — the only recorded routes are 1,300 ft big-wall rock at IV/V 5.10 to 5.10c. Lewis Peak: needs a rope; see unknowns.
- — Guided is normal here and is exactly the Orizaba model you already accept. Bishop-based services (Sierra Mountain Center on South Main St, Sierra Mountaineering International on North Main St) run these peaks as scheduled 4-day trips in August and early September, permits included, and SMC's Palisade fourteeners trip explicitly says technical climbing skills are not required — only backpacking experience and experience above 12,000 ft. Note the contrast with their Mount Sill Swiss Arête trip, which does require you to follow 5.8 on trad multipitch. Book early: the early-September departures show as full.
- — Afternoon thunderstorms are the trip-ender in this range in late summer. You will be on an exposed granite crest above 13,000 ft with rappels between you and safety. Summit early and be off the ridge by early afternoon; build a spare day into the itinerary.
- — Late-season ice, the counterintuitive one: your usual window is the worst time of year for the east-side snow lines, not the best. By late season the U-Notch is blue ice with an open bergschrund that Mountain Project describes as going from easy to "seriously hard". Do not let anyone route you over the Palisade Glacier in early September without ice tools and a guide who has looked at it recently. Approach from Bishop Pass instead.
- — Water at Thunderbolt Col and in upper Palisade Basin can be thin in a dry late summer; the tarns a few hundred feet below the col are the reliable source, and guides camp there rather than on the col in bad weather anyway.
- — Black bears are active in both canyons and at the trailheads. Canister in the backcountry, nothing scented left in the car.
- — Loose rock in the chutes is constant. Helmet, and do not put two parties in the same gully.
- — Permit admin that quietly kills trips: you must print the permit before 10:00 a.m. on the entry date or it is cancelled as a no-show; the leader or alternate named at booking is the only person who can use it, and names cannot be changed afterwards; the $6 reservation fee is never refunded.
What it could not establish
- — Lewis Peak's easiest route and its grade. I could not find a single route description on any source reachable this session. Its OSM position (36.5734 N, -118.2900 W, 4,306.7 m) places it on the Whitney crest directly between Crooks Peak and Aiguille Extra, among the needles, which strongly implies a technical rock climb — but I am not going to invent a grade. I also could not confirm whether "Lewis Peak" is a name used in climbing guidebooks at all or is only an OSM/listsofjohn label; listsofjohn.com, peakbagger.com and summitpost.org were all unreachable from this session (403).
- — Whether you want Lewis Peak and Aiguille Extra dropped from this trip entirely or split into a separate Lone Pine / Mount Whitney trip. That is a decision for you, not me — but as listed they make the Bishop/Big Pine trip incoherent, and Aiguille Extra in particular (IV/V 5.10 big wall) is not a peak-bagging objective under any circumstances.
- — Whether the Bishop guide services will take a client with no roped-climbing background at all. SMC's Palisade fourteeners page says technical skills are not required, but its Swiss Arête page requires following 5.8 on trad multipitch — so it varies by objective. This needs a phone call, and it should happen before you book flights.
- — Current guided availability for 2026/2027. I saw scheduled 4-day Palisade departures in early August and early September, with at least one marked full, but I did not verify pricing or open dates and would not quote them anyway.
- — The exact SFO–Bishop (BIH) flight schedule. Search summaries indicate United serves BIH from SFO with daily summer service, but the airport's and airline's own pages did not load for me, so do not plan around it without checking.
- — Current Palisade Glacier and bergschrund condition for your specific dates. There is no land-manager conditions page for it; the guide services and the Bishop climbing shops are the real source, a few days out.
- — Whether the Wheeler Fire is still burning and whether any closure has been posted since the alert was last updated on 20 August 2026. The alert has no end date and points to a Facebook page for detail.
- — Season dates, opening status and reservability of the Big Pine Canyon and Bishop Creek campgrounds into September — I did not read the individual campground pages, and high-elevation Inyo campgrounds close on varying dates in autumn.
- — Current status of the destroyed Big Pine Creek South Fork bridge. Not on your route, but noted on the Inyo NF regional page with no repair date.
Look up a route
The peak name links to a checked page — 14ers.com for Colorado, Wikipedia elsewhere. What follows are site-scoped web searches, not pages. All three sites refuse automated checks, so a direct trail link would be a guess; AllTrails’ own search URL also tries to hand off to its app on a phone, which is not what reading about a route should do.
- North Palisade · AllTrails · Peakbagger · SummitPost
- Starlight Peak · AllTrails · Peakbagger · SummitPost
- Polemonium Peak · AllTrails · Peakbagger · SummitPost
- Mount Sill · AllTrails · Peakbagger · SummitPost
- Thunderbolt Peak · AllTrails · Peakbagger · SummitPost
- Aiguille Extra · AllTrails · Peakbagger · SummitPost
- Lewis Peak · AllTrails · Peakbagger · SummitPost
- Sam Mack Meadow · AllTrails · Peakbagger · SummitPost
- Polemonium · AllTrails · Peakbagger · SummitPost
- Thunderbolt Col · AllTrails · Peakbagger · SummitPost
Sources it read
- https://www.fs.usda.gov/r05/inyo/permits/wilderness-permits
- https://www.fs.usda.gov/sites/nfs/files/publication/trail%20quota%20sheet.pdf_0.pdf
- https://www.fs.usda.gov/r05/inyo/recreation/trails/big-pine-creek-north-fork-trail
- https://www.fs.usda.gov/r05/inyo/recreation/trails/big-pine-creek-south-fork-trail
- https://www.fs.usda.gov/r05/inyo/recreation/trails/bishop-pass-trail-south-lake
- https://www.fs.usda.gov/r05/inyo/recreation/big-pine-region
- https://www.fs.usda.gov/r05/inyo/recreation/bishop-region
- https://www.fs.usda.gov/r05/inyo/wilderness/mount-whitney
- https://www.fs.usda.gov/r05/inyo/alerts
- https://www.fs.usda.gov/r05/inyo/alerts/wheeler-fire
- https://www.fs.usda.gov/r05/inyo/fire/info/fire-restrictions
- https://www.recreation.gov/permits/233262
- https://www.recreation.gov/permits/445860
- https://www.nps.gov/seki/planyourvisit/canister-areas.htm?fullweb=1
- https://www.nps.gov/yose/planyourvisit/tioga.htm
- https://www.nps.gov/yose/planyourvisit/reservations.htm
- https://en.wikipedia.org/wiki/North_Palisade
- https://en.wikipedia.org/wiki/Mount_Sill
- https://en.wikipedia.org/wiki/Thunderbolt_Peak
- https://www.mountainproject.com/area/109055786/aiguille-extra