Lassen Volcanic National Park with Katia

Lassen Volcanic National Park protects a landscape of active hydrothermal basins, alpine lakes, and Lassen Peak itself — one of the largest plug-dome volcanoes on earth. We hiked here with Katia among the fumaroles and boiling springs of Bumpass Hell, before the kids.

(Pre-digital era — no photos survive in the cloud archive. 2010 is right; the exact day isn't recorded.)