Errata for the first edition

First editionEvery November I would be ready for a July hike (permits open exactly six months ahead…

CorrectFor a July hike, permits come up in January and February. Yosemite runs a weekly lottery 24 weeks ahead; the Inyo National Forest trailheads open six months ahead.

First editionMount Lyell … rises just east of the pass

CorrectMount Lyell rises southwest of Donohue Pass.

First editiona 2015 survey found it no longer moves at all

CorrectThe study that found the Lyell Glacier no longer moves was published in 2013.

First editionnine miles … 12.72 miles … Fifteen miles … Thirteen and a half miles … under seven miles

CorrectMeasured from the GPS track: 7.6, 12.7, 12.9, 13.7 and 4.6 miles, about 51.5 miles in all.

First editionit was renamed for Ansel Adams in 1984, the year after he died

CorrectAnsel Adams died in April 1984, and the wilderness was renamed for him later that same year.

First editionJust off the trail lie Garnet Lake …

CorrectThe JMT passes right along Garnet Lake.

First editionPast it, a sharp climb leads to Tully Hole

CorrectSouthbound from Lake Virginia, the trail descends on switchbacks into Tully Hole.

First editionthe drop into Vermilion Valley and Muir Trail Ranch

CorrectThe JMT does not go into Vermilion Valley. Vermilion Valley Resort is a side trip off the trail, reached by ferry across Edison Lake.

First editionSelden Pass (10,800 feet, named for a Forest Service surveyor, Selden Hooper)

CorrectSelden Pass is about 10,900 feet, named for USGS surveyor Selden Stuart Hooper.

First editionEvolution Basin opens up: Lake McDermand and Helen Lake

CorrectHelen Lake is on the far (south) side of Muir Pass, not in Evolution Basin. The lakes below the pass are McDermand and Wanda.

First editionDarwin, Mendel, Huxley, Wallace, Spencer, Fiske, Haeckel, and Lamarck

CorrectTheodore Solomons named six of the Evolution peaks in 1895: Darwin, Huxley, Spencer, Wallace, Haeckel and Fiske. Mendel and Lamarck were named later, by others.

First editionI climbed the 3,000+ feet from Le Conte Canyon to Dusy Basin

CorrectThe climb from Le Conte Canyon to Dusy Basin is about 2,600 feet (measured from my own GPS track). Chapter 4's "nearly 3,500 feet" is corrected the same way.

First editionCCC and Forest Service crews carved it out of the sheer rock in the early 1930s

CorrectThe Forester Pass trail was built in 1930 to 1932, before the Civilian Conservation Corps existed (it began in 1933).

First editionreintroduced starting in 1977 … recovered to more than four hundred

CorrectSierra Nevada bighorn sheep were reintroduced from 1979, and the population has recovered to more than six hundred.

First editiondrop into the deepest canyon in the Sierra

CorrectThe Kern is one of the deepest canyons in the Sierra; Kings Canyon is deeper.

First editionending on the highest summit in the country

CorrectMount Whitney is the highest summit in the contiguous United States.

First editiona wooden tub of ninety-five-degree spring water

CorrectKern Hot Spring is a cement tub, behind a wooden fence.

First editionThe way down runs past Consultation Lake, Outpost Camp, and Mirror Lake

CorrectGoing down, the order is Consultation Lake, Mirror Lake, then Outpost Camp.

First editionthe dental appliance keeps me around 15 AHI, normal sleep for most people

CorrectAn AHI under 5 is normal. Around 15 is mild-to-moderate apnea, much improved from my original 95.

First editionthe southbound rolling lottery for it

CorrectYosemite now runs a weekly lottery 24 weeks ahead for 60% of permits; the other 40% open a week before the start date. Donohue Pass exits are capped at 45 a day.

First editionif the northbound lottery shuts you out

CorrectIt is the southbound (Donohue Pass exit) lottery that is hard to win.

First editionroughly 46,000 feet of cumulative elevation gain northbound

CorrectAbout 46,000 feet is the southbound figure; northbound is about 38,000.

First editionJMT permits now generally start from the Lyell Canyon walk-in trailhead

CorrectTwo thirds of Donohue exit permits (30 of 45 a day) start from Lyell Canyon; the rest start from Happy Isles.

First editionyou miss little of Yosemite by entering at Donohue

CorrectEntering at Donohue skips about 35 miles of the JMT: Happy Isles, Nevada Fall, Cathedral Pass and Lyell Canyon.

First editionLateral entries (Rush Creek, Bishop Pass, Piute Pass, Kearsarge, MTR, VVR)

CorrectMTR and VVR are resupply stops, not permit entry points. You reach them from Florence Lake and Lake Edison, with a Sierra National Forest permit.

First edition(no section on bear canisters or resupply)

CorrectBear canisters are required throughout Yosemite's wilderness, in listed Inyo National Forest areas, and in Sequoia and Kings Canyon zones including the Rae Lakes Loop and Dusy Basin. Resupply is by mailed package at Reds Meadow and Vermilion Valley Resort, and by bucket at Muir Trail Ranch (mailed at least three weeks ahead). Both are now covered in the book.