A section of highway in the US state of Colorado has been totally destroyed by two stone blocks "the size of a building", officials say.
The road was hit by a slide consisting of dirt, stones and two large rocks, said the Colorado Department of Transportation.
Pictures published on his Facebook page show a trench 8ft deep (2.5m) back of the stone block.
The road between the cities of Cortez and Telluride is closed indefinitely.
The heavier waves are estimated to weigh nearly 4,000 tonnes and are measured 50ft (1
Work is underway to remove loose rock to prevent further slides, says the department.
] The two boulders will have to be drilled and blown. It is not yet known when the road will reopen.