Nestled within Lassen’s peaceful forests and untouched wilderness, hissing fumaroles and boiling mud pots still shape and change the land, evidence of Lassen’s long fiery and active past. Lassen Peak is the largest of a group of more than 30 volcanic domes erupted over the past 300,000 years in Lassen Volcanic National Park.
Leashed pets are allowed in developed areas, such as picnic areas, parking lots, and along gravel and paved roads. Pets are not allowed in the buildings, on trails, on boardwalks, or in the back country. Leashes must be no longer than six feet.