Ce qui était autrefois une mine à ciel ouvert, Ruggles Mine, est maintenant une destination populaire ouverte pour l'exploration. La fosse comprend des tunnels et des chambres souterraines auxquelles vous pouvez faire l'aventure. Il y a des endroits où vous pouvez faire de la plongée sous-marine avec l'équipement approprié.
Ruggles Mine is an open-pit mine that was turned into a tourist attraction but is now closed and was recently sold.The mine is located 40 miles (64 km) northwest of Concord, New Hampshire, in the town of Grafton, a short distance from Route 4 at the village green. The spacious pit includes tunnels and underground chambers, some of which are filled with water. Visitors were allowed to keep any of the various minerals that were found on the mine floor or that could be hammered loose from the walls of the pit.Provided By: https://en.wikipedia.org/wiki/Ruggles_Mine