The cave has been prepared for people who are not cavers to experience safely, and the preparation has been thorough.

The route the Historic Tour follows is mapped, measured, interpreted at every significant point by trained guides who know its geology and history.

The distance from the entrance to specific features is precisely known.

The time required for the tour is established within narrow margins.

Nothing about the experience, for the modern tourist, involves genuine navigational uncertainty.

The ancient miners who came down this same cave system had none of this infrastructure.

Their knowledge of the route was acquired through experience and transmitted through instruction, not mapped onto paper or stored in guidebooks.