While most go to California for the stunning beaches, Pacific Coast Highway, and southern national parks, few know about the impressive Lava Beds National Monument, nestled along the Oregon border in Northeast California.
This monument is home to the largest concentration of tube caves in the continental United States. Tube caves are created from outer layers of molten lava that have cooled, and these formations have been carved by the nearby Medicine Lake Volcano. You'll have the opportunity to go on independent and guided tours of these caves to see not only rock formations, but also rock art. Additionally, if you head there in the winter and plan in advance, you might get to explore the ice caves.
Lava Beds also boasts incredible historical sites to learn about. From the Modoc War of 1872-1873 to the fortress that was converted to a Japanese internment camp, you'll have plenty to see and explore in California's hidden gem.