Page Type Page Type: Trailhead
Additional Information County: Inyo
Seasons Season: Spring, Summer, Fall, Winter
Additional Information Elevation: 9128 ft / 2782 m

Overview: A Gateway to the Evolution Region

This trailhead (elevation 9,128 feet) is the starting point for several cross-country routes into the Evolution region and the 8 Evolution peaks. The Evolution region covers the Sierra Crest from Bishop Pass to Piute Pass. Darwin Col, Haeckel Col and Wallace Col are fairly direct routes into this region.
Piute Crags, Sierra NevadaPiute Crags seen from Lake Sabrina Basin Trail, 9.8.07

The trailhead is just below the dam for Lake Sabrina. The trail traverses above Lake Sabrina’s east shore past a junction leading to George Lake and on to Blue Lake where the trail branches. The south branch goes to Donkey Lake. The other branch goes west past Dingleberry Lake to a fork where the branch to the right goes to Midnight Lake and the left to Hungry Packer Lake. South of Hungry Packer Lake is Echo Lake virtually at the foot of Clyde Spires and Mt. Wallace.

Hungry Packer Lake (11,071 ), Sierra NevadaHungry Packer Lake (11,071) east of the Sierra crest

Echo Lake, Clyde SpiresClyde Spires from Echo Lake (11,602')

Driving Directions

From Interstate 395 in Bishop, take Highway 168 west approximately 19 miles to the trailhead. The trailhead is on the left side of the road just before you come to the large parking area next to Lake Sabrina. Note that there is no overnight parking in the vicinity of the trailhead. If you are going on an overnight trip, you will have to park your vehicle about ½ mile back from the trailhead.

Red Tape

Wilderness permits are required for overnight camping anywhere accessible from this trailhead. There is a wilderness permit quota in effect between May 1 and November 1 by which 60% of the permit quota is allocated to advance reservations ($5.00 per person) and 40% is made available gratis on a walk-in, first-come-first-served basis. See the link below to the Inyo National Forest website for current information. You can also visit or call the main permit office regarding permits:

Inyo National Forest Wilderness Permit Office
873 North Main Street
Bishop, CA 93514

Reservation Line: 760.873-2483
Permit Fax Line: 760.873-2484
Wilderness Information: 760.873-2485

When to Visit

The main climbing and hiking season is from May to October. In most years, the winter months provide a lot of snow requiring snowshoes for approaches and crampons and ice axe for many routes.

Mt. Fiske (13,503 ), Sierra NevadaMt. Fiske (12,503') in Evolution region

Other Information

Trailhead Amenities

At the trailhead itself, there are no amenities whatsoever. Back down the road about a mile is the developed Sabrina Campground. Overnight campsites are currently a stiff $19. This is cheaper than a motel but costlier than throwing the sleeping bag beside the car along the road.

Weather and Road Conditions

For current weather conditions, check the for the Bishop area National Weather Service or the Sierra Weather Page

For road conditions specifically, check with
CALTRANS or call 1-800.427-ROAD.



Parents refers to a larger category under which an object falls. For example, theAconcagua mountain page has the 'Aconcagua Group' and the 'Seven Summits' asparents and is a parent itself to many routes, photos, and Trip Reports.

Evolution GroupTrailheads