Crawford State Park is located near the Canadian border in Pend Oreille County, Washington. The 49-acre (20 ha) park contains Gardner Cave, which is over 1,055 feet (322 m) feet in length and has stalactites, stalagmites, rimstone pools, and flowstone. It is the third longest natural limestone cave in the state. There are tours of the cave during the summer months, though the park is closed Tuesdays and Wednesdays.
Coordinates: 48°59′44.6″N 117°22′4″W / 48.995722°N 117.36778°W