La Grande Crevasse is a Valley located in Percé; Le Rocher-Percé, Quebec.

• Latitude: 48° 31' 36'' North   (decimal: 48.5267279)
• Longitude: 64° 14' 47'' West   (decimal: -64.2462525)
• Topography Feature Category: Valley
• Geographical Feature: Crevasse
• Canadian Province/Territory: Quebec
• Location: Percé; Le Rocher-Percé
• Atlas of Canada Locator Map: La Grande Crevasse
• GPS Coordinate Locator Map: La Grande Crevasse Lat/Long