The 25 Best Nerd Road Trips | Popular Science
The 25 Best Nerd Road Trips | Popular Science.
Free Enterprise Radon Health Mine
Geoff Manaugh and Nicola Twilley/v-e-n-u-e.com
Boulder, Montana N 46.271749 / W 112.154152 Visitors to this former uranium mine pay to sit in lounge chairs 85 feet belowground and breathe the radon gas seeping from the tunnel’s rock walls. The facility, founded in 1952, is one of four radon-therapy sites in the U.S., all in Montana.