Lassen Volcanic National Park is open 24 hours per day, 365 days per year. You do not need a reservation to enter the park.
Visiting in Spring
Access to snow-free park areas/features and the number of visitors gradually increase between April and June.
2022 Operating Dates
Facilities are open 24 hours unless noted otherwise.
Manzanita and Summit Lake Areas
Warner Valley - Juniper Lake - Butte Lake Areas
Last updated: August 9, 2022