FranceThe Singing Stones of Brittany (French: Les pierres sonnantes du Guildo) are amphibolite rocks located at Saint-Cast-le-Guildo in the Côtes-d'Armor department of Brittany, France[1]. These rocks produce a metallic ringing sound when struck with another stone[1]. The phenomenon is due to the rock's mineral composition and density[1].
Singing Stones of Brittany
| Type | Geological interest |
|---|---|
| Country | France |
| Coordinates | 48.5760° N, 2.2117° W |