The Magdalen Islands form a small archipelago in the Gulf of Saint Lawrence with a land area of 205.53 square kilometres (79.36 sq mi). Though closer to Prince Edward Island and Nova Scotia, the islands form part of the Canadian province of Quebec.
There are eight major islands: Amherst, Grande Entrée, Grindstone, Grosse-Île, House Harbour, Pointe-Aux-Loups, Entry Island and Brion. All except Brion are inhabited. There are several other tiny islands that are also considered part of the archipelago: Rocher aux Oiseaux, Île aux Loups-marins, Île Paquet and Rocher du Corps Mort.
The islands' interiors were once completely covered with pine forests.An ancient salt dome underlies the archipelago. The inherent buoyancy of the salt forces the uplift of overlying Permian red sandstone.
Nearby salt domes are believed to be sources of fossil fuels. Rock salt is mined on the Islands.