A jaunt to Honey Lake Valley and Noble's Pass (1853)
Lassen County Cities: Location - Maps - Zip Codes - Information - links
Lassen County Communities: With hyper-linked maps
Lassen County Communities, Cities, Towns and named places: With hyper-linked USGS maps
Lassen County Maps
Lassen County Place Names
Lassen County Place Names: USGS National Mapping Information
Named Summits of Lassen County
Named Summits of Plumas County
North Lahontan Water Region: Lassen County Water Sources
Rainfall History of Lassen County: Weather station Susanville Airport - 40.38°N 120.56°W - 4143 feet above sea level.
Sierra Bioregion: CERES - Environmental Information by Geographic Area
Sierra Nevada Ecosystem Project (SNEP)
Sierra Nevada: Getting to know the Sierra
The Great Basin: Largest U.S. desert 190,000 square miles  - often called "High Desert" (3,000 to 6,500 feet)
USDA Forest Service, Pacific Southwest Region
Volcanoes of the World: Smithsonian Institution - Long Valley - Eagle Lake - Mount Lassen
Wikipedia: Lassen County Geography