Mount Lassen

Mineral, California 96061

Mount Lassen

Mount Lassen Professional Review and Guide

"Lassen Peak, this southernmost of the Cascade volcanoes, is a minor mountain compared with the glaciated giants farther north. Its only worthwhile route is a trail leading to its summit. Mount Lassen is the significant plug-dome remnant of a former 11,000-foot stratovolcano known as Mount Tehama (or Brokeoff Volcano). Mount Tehama collapsed and was nearly erased by ice-age glaciers, but Lassen Peak, a dacite dome, extruded itself from Tehama's remains some 11,000 years ago. In May 1914, Lassen awoke, and a year later began spilling lava, snow and mud across its slopes. On May 22, 1915, the mountain erupted violently, shooting hot gasses and ash into the stratosphere. A simultaneous lateral blast and nuee ardente (hot pyroclastic flow) devastated the northwestern part of the present-day park. This eruption, and the presence of fumaroles and 200° F mud pots nearby, signal the mountain is far from dormant. Mount Lassen, the "largest plug dome in the world," is the centerpiece of one of California's less-crowded national parks, and is located in northeastern California about 180 miles north of Sacramento."

Nearby Trails

Mount Lassen Reviews

Do you know something we don't know? Help others by leaving a review.

Mount Lassen Photos

Help others discover amazing sights!

Trail Information

Mineral
Nearby City
Out-and-back
Trail Type
Easy
Skill Level
3 - 5 hours
Duration
Lassen Volcanic National Park
Local Contacts

Activity Feed

Aug 2018