The two-hour "Signature Rock Discovery Tour" simulates natural cave exploration with the assistance of a guide, in a section of the cave that had not previously been open to the public. There is no artificial lighting in this part of the cavern. Visitors are equipped with a suit appropriate for the muddy and cold journey. The expanded tour includes the remains of Howe's original tourist boat, signatures along the rock left by cavern adventurers more than 100 years ago, and a “Music Hall” where sound echoes exceptionally well. The tour usually ended at the "Lake of Mystery", as visitors would have to crawl through a passage filled with water inches away from the ceiling. The store at Howe Caverns sells 'cave aged' cheese that is stored in a locked room by the elevators.