"One of the most amazing things about CAT is the transformation of the slate quarry," said Kinsman. "What was a brownfield site has been transformed into productive organic vegetable gardens and a wildlife haven." Pine martens, otters and dormice are among the animals that have returned. Young woodland smothers the floor of the former mining pit, with scattered pieces of rusting, skeletal hardware the only clues as to the quarry"s former life. "It"s like the Lost World down there," said Bullen.