Subway Cave is an unusually easy lava tube to explore, at 1,300 feet (1/3 mile) long, and with ample headroom and a rubble-free floor. The U.S. Forest Service has installed concrete stairs, a trail from the parking lot, and interpretive signs explaining the origins of the cave. This is the largest accessible tube in this flow, and temperatures remain at about 46F year-round. Be sure to take a light jacket and a flashlight.
