What does the Golden Giant Mine and the  Lost McLeod Mine have in common?
Golden Giant Mine The Golden Giant Mine is a closed underground gold mine in the Hemlo mining camp in Canada, located north of Lake Superior, midway between Sault Ste. Marie and Thunder Bay, Ontario near the town of Manitouwadge.
Giant Springs Giant Springs is a large first magnitude spring located near Great Falls, Montana and is the central feature of Giant Springs State Park. Its water has a constant temperature of 54 °F and originates from snowmelt in the Little Belt Mountains, 60 mi away. According to chlorofluorocarbon dating, the water takes 50 years to travel underground before returning to the surface at the springs according to the placard at the state park.