The mine Witness Ales is a mining site located in Ales , in the department of Gard and region Occitan . Open to the public since 1985 , it now presents a retrospective of the activity coal from the mining area of Ales. The scenography of the site was completely overhauled in 2010. Between 2014 and 2020 and following a heavy rainfall event, the visit to this site was closed. Since July 2020 the site has reopened. Duration of the visit: Commented from start to finish, the route through the galleries bears witness to a century of mining, industrial and social activities during which miners exploited coal in a difficult and dangerous environment.