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The Lassen Peak National Monument, later expanded into Lassen Volcanic National Park, was established by United States President Theodore Roosevelt (pictured) in 1907. The areas surrounding Lassen Peak, especially to its east, south, and southeast, represented a meeting ground for Maidu, Yana, Yahi, and Atsugewi Native Americans. [57]
The 29 mi (47 km) Main Park Road was constructed between 1925 and 1931, just 10 years after Lassen Peak erupted. Near Lassen Peak the road reaches 8,512 ft (2,594 m), making it the highest road in the Cascade Mountains. It is not unusual for 40 ft (12 m) of snow to accumulate on the road near Lake Helen and for patches of snow to last into July.
Cinder Cone is a cinder cone volcano in Lassen Volcanic National Park within the United States.It is located about 10 mi (16 km) northeast of Lassen Peak and provides an excellent view of Brokeoff Mountain, Lassen Peak, and Chaos Crags.
Lassen Volcanic National Park has a lot in common with its famous sister parks, but far fewer visitors.
Sometime between 25,000 and 31,000 years ago, Lassen Peak, a Pelean lava dome volcano, was pushed up through the pre-Lassen dacites. [27] Lassen grew past the normal maximum size of plug dome volcanoes, 1,000 ft (300 m), and reached a height of 1,800 feet (550 m) above the surrounding plateau [ 27 ] in as little as a few years. [ 3 ]
Part of the Lassen volcanic area, its tallest remnant, Brokeoff Mountain, is itself the second highest peak in Lassen Volcanic National Park and connects to the park's highest point, Lassen Peak. Located on the border of Tehama County and Shasta County , Brokeoff's peak is the highest point in the former.
The eruptions at the Chaos Crags mark one of just three instances of Holocene activity within the Lassen volcanic center. The cluster of domes is located north of Lassen Peak and form part of the southernmost segment of the Cascade Range in Northern California. Each year, a lake forms at the base of the Crags, and typically dries by the end of ...
Lake Helen in Lassen Volcanic National Park in June of 2024. Lake Helen is a glacial lake or a tarn occupying a cirque at around 8,200 feet (2,500 m) in Lassen Volcanic National Park. [1] The lake is located to the south of Lassen Peak and west of Bumpass Mountain in the Shasta Cascades region of Northern California.