Near the Oregon and California border is a nice national park site, Oregon Caves National Monument. The site is most known for the marble caves that visitors can see. The park is in a bit of a remote location, but provides a variety of things to do. There is a small museum to learn more about the unique geological features, and then visitors can go on a cave tour or a hike. When we visited we stopped by the visitor center and cave, but our favorite was the hike! There was a beautiful view that showed the valley. Oregon Caves also has camping providing another way to explore the park.