The landscape is so surreal here that an Oregon-bound pioneer in the early 1800s described this area as the ‘the Devil’s Vomit’. Roughly the size of Rhode Island, these young lava flows are visible from space, and the Visitor’s Center is replete with information and exhibits. The park offers interpretive programs/signage, and a 7-mile scenic loop drive. Dogs are allowed in the park for no additional fee, but they must remain on the paved roads or in the camp areas. They are not allowed on the trails or backcountry. Dogs must be leashed and cleaned up after.