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Photo: FireLordAang, Public domain via Wikimedia Commons
The activities here include fishing and boating in Baum Lake, hiking the nearby Pacific Crest Trail, picnicking, and simply watching the fish (or geese). You can go any time of the year.
Crystal Lake Fish Hatchery is a fish hatchery run by the California Department of Fish and Game, located in Cassel, California.
© OpenStreetMap contributors
Burney Falls is so spectacular, it has been called the 'Eighth Wonder of the World'. It is a twin waterfall at Lake Britton that stands 129 feet tall. It is accessible by foot, motor vehicle, horseback, or boat. If you are an avid hiker, the Pacific Crest Trail passes through the park.
The Hat Creek Radio Observatory is an Allen Telescope Array, looking for evidence of intelligent life beyond Earth. Tours are available. Cell phones and other electronic devices must be turned off on site to avoid interfering with the research.
Subway Cave is the largest resulting lava tube from the former Hat Creek flow. There is a self-guided tour available if you want it. The temperature inside is very cold year-round, so bring a jacket. Also bring a good flashlight, as most of the cave is completely dark. It is closed during winter.