We’re heading back south in Iceland along the western coast of the island.

The Grábrók Crater, located in the Borgarfjörður region along the scenic Silver Circle route in West Iceland, is a remarkable testament to the country’s volcanic origins. Formed during a fissure eruption about 3,400 years ago, Grábrók is the largest of three craters in the Grábrókarhraun lava field, a vast area of rugged, moss-covered lava that extends across the Borgarfjörður region.

The crater’s dramatic formation is the result of Iceland’s unique position on the Mid-Atlantic Ridge, where the North American and Eurasian tectonic plates meet.