Swallow holes

Venture into impressive swallow holes and caves adorned with natural concretions, hidden realms that have never seen the sun. The Gouffre de Padirac and the Lacave Caves in Lot, the Labouiche underground river in Ariège, the Gouffre d'Esparros in Hautes Pyrénées and more…: there are plenty of places to keep cool in summer.