This year marks the centennial of the Lassen Peak eruption. On May 22, 1915, an explosive eruption devastated the surrounding area that became Lassen Volcanic National Park a year later. Lassen is one of the least visited National Parks. Now that we’ve been there, we are a little confused about how it could possibly be so empty. With over 150 miles of trails in the park, we hope to go back. For our short one day visit, we combined two hikes with a ranger talk and a scenic drive for a..