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Summit

Thunder Mountain

California

About

Thunder Mountain is a summit in California's Cucamonga Wilderness, part of the San Gabriel Mountains National Monument Ranger District of Angeles National Forest. The nearest town is Wrightwood, about 6 miles away. Trails start right near the summit. The Three T's is about 0.1 mile away, and the Telegraph Peak Trail is about half a mile away. For an overnight base, Manker Flat campground is about 1.4 miles off, and the Icehouse Canyon climbing area is a similar distance.

Summit Facts

Summit elevation

8,565 ft

Elevation from USGS 3D Elevation Program terrain data (about 10 m resolution).

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Location

Thunder Mountain

California

Name and location: U.S. Geological Survey, Geographic Names Information System (GNIS). Elevation: USGS 3D Elevation Program. View the GNIS record.

Facts about this place

Where it is

Nearest town
Wrightwood, California · 5.7 mi

Source: Wilderness.net boundaries; USFS EDW boundaries; USGS GNIS populated places

Conditions

Active alerts for Angeles National Forest as of Oct 9, 2026:

Source: USFS forest alerts

Nearby

Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)

    Thunder Mountain — Summit in California | Roamze