Lassen VolcanicBy Shaun / April 19, 2020 Lassen Volcanic Lassen-NP-Dawn Lassen-Caldera-with-Mt-Shasta Lassen-Brokeoff-Mtn Lassen-Whitebark-Pine Lassen-NP-Clarks-Nutcracker Lassen-NP-Mudpot Burney-Falls Lassen-California-Tortoiseshell-Butterfly