cave where the aborigines lived that crosses the mountain with access to a ravine. gran canaria, spain

cave tirajana settlement tunnel fortaleza gran canaria guanches aboriginal canary islands indigenous rock ancient historic unesco nature corridor cavern heritage archeology mountain fort history stone historical famous chamber complex underground people one nobody geology hole spain entrance santa lucashy destination origin volcanic carved fortified funeral stronghold access archaeological lucã­a island where aborigines lived that crosses ravine concept luci­a ravine