Distance: 3 mi (5 km) round trip
Elevation: 8,000 – 7,700 ft (2,440 – 2,348 m)
Season: July to October
|Lassen Peak - one of the largest volcanic domes in the world|
|Lake Helen in early August|
Approximately 350,000 years ago, a large stratovolcano called Mount Tehama suffered a catastrophic eruption and formed a large caldera. About 27,000 years ago, a large volcanic plug began to rise up along the edge of this caldera. It eventually formed the 10,000 foot Lassen Peak, which is one of the largest volcanic domes on Earth.
|Volcanic bombs from the 1917 eruption along the trail|
|The boardwalk at Bumpass Hell|