California is a state with natural beauty that stretches the entirety of the state to each of its borders. It is also a state where the beauty above ground in some areas pales with the beauty below ground. Like a sunset on an unknown beach, each of these areas offer solitude, otherworldly beauty, and in some cases, some of the most unique terrain on the planet. Even if you've never explored a cave before, each of these spots will interest and intrigue you, and provide you a great introduction to the world below your feet.
On the Northern border of Lassen National Park in the Lassen National Forest is the Subway Cave, a remnant of Northern California's volcanic past. This portion of California is part of the Cascade Range of mountains, ancient volcanoes that shaped the geology of the region thousands of years ago, and continue to shape the region even today.