This is crazy. Bizarre pictures have been coming out of Iceland's Thingvellir National Park, where other-worldly zig-zag…

This is crazy.
Bizarre pictures have been coming out of Iceland's Thingvellir National Park, where other-worldly zig-zag patterns have appeared on the frozen surface of Lake Thingvallavatn.
According to local reports, the pattern stretches for 2 km (1.2 miles) along the ice, and park officials say they've never seen anything like this before