Lassen Volcanic National Park is open 24 hours per day, 365 days per year. You do not need a reservation to enter the park.
Summer (July – September): Greatest access to activities, services, and park areas/features; highest number of visitors.
Facilities are open 24 hours unless noted otherwise.
Manzanita and Summit Lake Areas
Warner Valley - Juniper Lake - Butte Lake Areas
Last updated: August 20, 2021