Overview

Tomahawk Lake is a high-alpine lake located within Humphreys Basin, accessed from the North Lake trailhead via Piute Pass. It is not directly on a maintained trail and requires travel off the main Piute Pass corridor once in the basin. Because of this, Tomahawk Lake sees far fewer visitors than lakes closer to the pass and can be a good option for groups seeking space, quiet, and flexibility in campsite selection. Please take note, there is minimal coverage.

 

Trail Beta

Trailhead	North Lake
Route	Piute Pass Trail > Humphrey's Basin
Mileage	13-15 miles round trip
Elevation Start	9,345 ft
Elevation Gain	~2,300 - 2,00ft
High Point	11,400 ft
Type	Out-and-back
Difficulty	Strenuous (off-trail travel)
Water	Available from lakes/streams (filter recommended)
Permit	Overnight
Pets	Yes (dogs allowed on-leash)
Land Manager	Inyo National Forest

Trail Description

From the North Lake trailhead, follow the Piute Pass Trail as it climbs steadily through forest and granite benches toward Piute Pass. After cresting the pass at 11,423 feet, the trail drops into the wide, rolling terrain of Humphreys Basin.

Tomahawk Lake is reached by leaving the maintained trail and traveling cross-country across open alpine terrain. Navigation is generally straightforward in clear weather, but there is no signed route, and hikers should be comfortable reading terrain and using map and GPS tools. The lake sits in an open granite setting with minimal tree cover and expansive views of surrounding peaks.

Because it is off-trail and set back from common travel lines, Tomahawk Lake often feels quieter than lakes closer to Piute Pass.

Best Season to Hike

July through October. Snow lingers late here due to the lake’s high elevation, and stream crossings can be tricky in early season.

Flora & Fauna

Vegetation is sparse beyond Piute Pass, with alpine grasses and low-growing plants. Marmots and pikas are common throughout the basin. Wildlife sightings vary, and food storage should always be handled carefully.

Geology

Tomahawk Lake sits in a glacial cirque carved during the last Ice Age. The surrounding headwalls and polished granite slabs are evidence of the massive glaciers that once filled Sabrina Basin.

History

Humphreys Basin is a broad glacial plateau characterized by granite slabs, erratic boulders, and shallow alpine basins. Tomahawk Lake sits within this classic high Sierra glacial landscape.

Driving Directions

From downtown Bishop, take Highway 168 (West Line Street) 18 miles to North Lake Road. Follow the steep, narrow road about 2 miles to the North Lake parking area. 

Parking is limited at North Lake. Arrive early or consider using nearby overflow lots.

Leave No Trace

Please recreate responsibly. Stay on designated trails, pack out all trash, and avoid trampling sensitive alpine meadows or picking wildflowers. Camp at least 200 feet away from lakes and streams, use a proper bear-proof food storage method, and follow fire restrictions. Respect wildlife, fellow visitors, and the land so future generations can enjoy these places too.

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