Grand Canyon Caverns, a longtime underground attraction on Route 66 west of Seligman, Ariz., will undergo $2 million worth of upgrades, according to the Kingman Daily Miner.
Among the improvements are landscaping, new concrete, a Frisbee golf course, an RV park, Boy Scout tent areas, and an observatory.
Co-owner Kim Kadletz also says he wants to further explore other levels of caverns and open them up to tourism, if possible.