Tags: Cave.
The Grotte Casteret also known by its Spanish name Gruta Helada de Casteret is a limestone ice cave located high in the Spanish Pyrenees within the Ordesa y Monte Perdido National Park. Discovered in 1926 by Norbert Casteret it is known for its Grande Salle (Great Hall) which has a frozen lake some 2000 square metres (22000 sq ft) in area its ice formations and a 20 metres (66 ft) ice wall into a second chamber.