Text: The caverns of the Grotte du Grand Roc, to the northwest of Les Eyzies, are a natural rather than a historical phenomenon, but well worth a visit for the weirdly shaped stalagmites and stalactites and the panorama of the V??zyre Valley.
Entailment: The caverns are fascinating because of the stalagmites and stalactites that populate them.
Contradiction: The caverns of the Grotte du Grand Roc are located to the southeast of Les Eyzies.