In November 1973, the caverns were registered as a National Natural Landmark[1][2] as they "feature terraced pedestal-like stalagmites, flowstone, curtains, rimstone, domepits, and waterfalls.

Since then subsequent owners have done extensive work on the lighting (making sure it does not allow the out-of-control growth of algae that old incandescent lamps cause) and many other cleaning and conservation projects as well as adding a dinosaur museum section to the gift shop.

The Greenbrier East Band provided in-cave fanfare for Addis's descent and shaky return to solid land from the top of the formation.

Environmental interests such as local schools and the Greenbrier River Watershed Association encourage the public to take educational tours in order to understand the unique relationship between surface water and groundwater.

Cavers on the Wild Tour are asked to respect the encroaching threat of white nose syndrome in the Appalachian bat population, and perform sterilization protocols with their gear and clothing before they come in.