Thousand Island Lake & Island Pass

cover photo
Nov 23, 2017 - Nov 26, 2017

Arduous but ultimately very rewarding late fall hike through Mammoth high country. Snow travel kept it challenging but beautiful.

Start at Silver Lake resort trailhead and steadily up past mining car track that climbs very steeply up to a power station at Agnew Lake. More climbing above Agnew Lake and along big Gem Lake. Snowpack deepens towards frozen Waugh Lake with sweeping views up to Island Pass above.

Next day hike to Island Pass was a real calorie burner without snowshoes! Knee-to-thigh deep snow at times and steady climb to 10K+ feet. Worth it for serenity & pano views from the pass.

Thousand Island Lake is a real wonder esp. this time of year where mostly frozen. Sunset on Banner Peak is a sight.

Beautiful sunrise pinks and onwards & up x-country to Clark lakes, taking shortcut around Agnew Pass. Very strong winds made raising tent a 2+ hour ordeal but it finally stood up. Winds continued all night & until back down to Gem Lake completing loop.

Fun facts

Had snowshoes but decided not to bring them :(

Broke another trecking pole during tumble in snow

Coyotes barking at Thousand Island Lake at night was a little scary

Visited Mono Lake on the way back

Route Map

DifficultyClass 1
Distance~22 miles
Highest ElevationIsland Pass (10225 ft)
JurisdictionJune Lake
MapTom Harrison Maps Mammoth High Country
TrailheadSilver Lake