Lassen Volcano National Park High Point Trip Report
 
Mt. Lassen (10,457 ft)
Date: September 2, 1981 
Author: Ron Tagliapietra 
The southernmost of the major Cascade volcanoes, Mt. Lassen is the largest 
plug dome in the world. Its eruption on May 22, 1915 was the most recent volcanic eruption 
in the contiguous states until Mt. St. Helens. 
Take CA 36 east from I-5 at 
Red Bluff to CA 89. Go north to the park boundary and continue about 8 miles to the trailhead 
just beyond Lake Helen. The trail ascends 2.25 miles to the interesting lava formations at the top.