oct 23, 1916 - Lassen Volcanic National Park

Description:

The Atsugewi have inhabited the area since long before white settlers first saw Lassen. They knew that the peak was full of fire and water and thought it would one day blow itself apart. European immigrants in the mid-19th century used Lassen Peak as a landmark on their trek to the fertile Sacramento Valley. One of the guides to these immigrants was a Danish blacksmith named Peter Lassen, who settled in Northern California in the 1830s. Lassen Peak was named after him. Nobles Emigrant Trail was later cut through the parking area and passed Cinder Cone and the Fantastic Lava Beds. Starting in May 1914 and lasting until 1921, a series of minor to major eruptions occurred on Lassen. These events created a new crater, and released lava and a great deal of ash. Fortunately, because of warnings, no one was killed, but several houses along area creeks were destroyed. Because of the eruptive activity, which continued through 1917, and the area's stark volcanic beauty, Lassen Peak, Cinder Cone, and the area surrounding were declared a National Park on August 9, 1916.
https://www.nps.gov/lavo/index.htm
https://www.newworldencyclopedia.org/entry/Lassen_Volcanic_National_Park

Added to timeline:

Date: