A Granite Cliff Forged by Cosmic Collision Offers the Finest View in Rideau Country.

By Kate Griffith

June 18, 2026

Photo Credit: Leif Olsen - Above the limestone village of Westport sits a granite cliff forged by a cosmic collision.

Half a billion years ago, a meteor the size of a school bus tore through the Earth's atmosphere and slammed into what is now southern Ontario, a few kilometres southwest of present-day Westport. The impact sent a massive earthquake rippling along a fault line across the Frontenac Arch — and in its wake, the earth along the top of what would become Foley Mountain dropped away by a hundred metres,…