La Grosse Roche is a Island located in Port-Cartier; Sept-Rivières, Quebec and has an elevation of 12 meters.

• Latitude: 50° 0' 13'' North   (decimal: 50.0036564)
• Longitude: 66° 55' 17'' West   (decimal: -66.9213228)
• Topography Feature Category: Island
• Geographical Feature: Rocher
• Canadian Province/Territory: Quebec
• Elevation: 12 meters
• Location: Port-Cartier; Sept-Rivières
• Atlas of Canada Locator Map: La Grosse Roche
• GPS Coordinate Locator Map: La Grosse Roche Lat/Long