Question: Which national park has more land area, Ordesa y Monte Perdido National Park or the Atlantic Islands of Galicia National Park?
Sentence (from "Grotte Casteret"): Discovered in 1926 by Norbert Casteret, it is known for its Grande Salle (Great Hall) which has a frozen lake some 2000 m2 in area, its ice formations, and a 20 m ice wall into a second chamber.
Relevant evidence: No