Take Aiken Mine Road to the Lava Tube
From Baker, drive 21 miles south on Kelbaker Road, then about 4.5 miles northeast on the unmarked Aiken Mine Road. Bear left at the fork, pass a corral on the left and then park in the loop at the bottom of a cinder cone.
Continue walking up the road on foot for 300 yards. Watch for a short, unmarked trail off to the right leading up the cinder cone. The trail ends at a hole with a ladder in it. This is the entrance to the lava tube. The lava tube is not maintained by the National Park Service.