Tyddyn Gwladys gold mine ... the mine shaft closed in 1899 and has been blocked off by a wall, leaving only the opening and a long, dark, flooded tunnel reaching far into the Welsh mountain side
Tyddyn Gwladys gold mine ... the mine shaft closed in 1899 and has been blocked off by a wall, leaving only the opening and a long, dark, flooded tunnel reaching far into the Welsh mountain side