Watch: Giant Colorado Mudslide Leaves 3 Missing

Rescue teams in western Colorado are searching for three people missing after a four-mile long mudslide in Mesa County.

The mud is thought to be 250ft deep in places, the Associated Press reports, after an entire ridge collapsed in the wake of heavy rainfall.

The area is extremely remote, and authorities said it was unlikely any structures had been swallowed by the mudslide. The nearest major road, the I-70, is around 26 miles away from the area and not in any danger.