Little Valley is a small, unincorporated community located in Lassen County, in the northeastern part of California. It lies to the west of the town of Susanville, nestled in a scenic valley surrounded by forests and mountains. It is at an elevation of 4,190 feet (1,280 m). Its population is 84 as of the 2020 census.

Johnstonville is a small unincorporated community in Lassen County, California. It is situated in the northeastern part of the state, near the city of Susanville. The area around Johnstonville provides numerous outdoor activities. It at an elevation of 4131 feet (1259 m). Its population is 973 as of the 2020 census, down from 1,024 from the 2010 census.

Lassen Volcanic National Park is home to over 30 volcanic domes, numerous hydrothermal areas, lush mountain landscapes, steaming fumaroles, meadows freckled with wildflowers, clear mountain lakes, and numerous volcanoes.

Cinder Cone, a 215 m (700 ft) tall volcanic cone located in the northern part of Lassen Volcanic National Park, is the youngest mafic volcano in the Lassen region and the second youngest eruption in the Twin Lakes sequence.

Eagle Lake is a lake at 5,098 ft (1,554 m) elevation in Lassen County approximately 15 mi (24 km) north of Susanville, California. An endorheic alkaline lake, it is the second largest natural lake entirely in the state of California.

The Painted Dunes are a unique natural feature located in the Lassen Volcanic National Park, in northeastern California. The dunes are situated in the Cinder Cone area of the park and are known for their striking colors, which range from deep reds and purples to bright oranges and yellows.