Supertide 'briefly' turns French town of Mont Saint-Michel into island

A supertide has briefly turned the famous Mont Saint-Michel in France into an island, much to the delight of the thousands of visitors who came to see the "rare phenomenon."

The "tide of the century," which takes place every 18 years, raises sea water level along the northern French coast. The rise in sea level has a particularly dramatic impact on the UNESCO world heritage site that is normally connected to the mainland by a narrow causeway at high tide, reported The Guardian.

The peak of the high tide on Saturday morning is said to have risen at the pace of a horse's gallop. It turned the outcrop briefly into an island, while the day's low tide allowed people to walk on the expansive flat seabed once again.