Digging a trench in the Lassen Region of Northern CA
Kristina, Lucy, and Katie with Lassen Peak in the background
Kristina, Paul, Stan, and Dan wishing they could summit Lassen Peak
Mike, Paul, and Kristina digging at Lassen
Paul, Kristina, Katie, and Mike in a trench
Kristina at Bumpass Hell in Lassen Peak National Park
Stan, Lucy, and Kristina at a cinder cone quarry in Morocco
Robin collecting tephra from Kilauea 1955 cone