Spain
13 caves
Gouffre de la Pierre Saint-Martin
Spain
88111 m long · 1410 m deep
Cueva de los Murciélagos
Spain
2000 m long
Grotte Casteret
Spain
500 m long
Simanya Cave
Spain
372 m long
Coves dels Hams
Spain
Cueva de la Pileta
Spain
Four Doors Cave
Spain
cave
Ojo Guareña
Spain
Mortillano system
Spain
146500 m long · 950 m deep
Cuevas de los Murciélagos
Spain
100 m long
Armintxe Cave
Spain
Caves of King Cintolo
Spain
Caves of Valeron
Spain
cave