The Lassen Peak trail offers hikers the opportunity to climb to the top of one of the largest plug dome volcanoes in the world. Beginning at the Lassen Peak parking area, the trail climbs through twisted mountain hemlock and whitebark pine trees on sand-like cinders. As the trees begin to thin and vistas of the park come into view, the trail steepens into series of switchbacks along a rocky ridge to the summit. The maintained trail ends at the first summit where exhibits invite hikers to rest and explore the panoramic view. Hikers may then continue to the second summit or the peak crater where a lingering rotten-egg smell of hydrogen sulfide reminds visitors that Lassen is ever-active.