Thingvellir is one of the most beautiful places in Iceland.

Thingvellir National Park is also central to the nation's history.

The Mid-Atlantic Ridge comes above water here. It is one of the few spots in the world where it does.

Thingvellir is an enormous geologic rift between the Eurasian and North American tectonic plates.

The rift has created spectacular scenery, including Iceland's biggest lake and dramatic cliffs.