Whether you hike Mt. Lassen on a clear day or scale it with a guide under a full moon, the experience is unforgettable. About 250 mi northeast of San Francisco, Lassen Volcanic has 106,000 acres of spectacular geologic wonders plus more than 150 mi of hiking trails, countless mountain lakes and streams, and canyon overlooks, plus wildlife and wildflowers galore.
You can take in stunning views of many of the park’s geological features from the road. Mellow hiking trails lead to waterfalls and meadows.
Though dormant since 1921, activity around volcanic Lassen Peak makes it clear that there’s still a lot going on beneath the ground. Fumaroles, mud pots, and bubbling hot springs dot the landscape. It’s a fun and sometimes smelly place to explore; but beware of the scalding water.
Biggest crowds: Mid-July through mid-September