Lassen National ParkBy Shaun / November 11, 2019 Lassen-Caldera-with-Mt-Shasta Lassen-Brokeoff-Mtn Lassen-Whitebark-Pine Lassen-NP-Clarks-Nutcracker Lassen-NP-Mudpot Lassen-California-Tortoiseshell-Butterfly Lassen California Tortoiseshell Butterfly Lassen California Tortoiseshell Butterfly Lassen Butterfly