A huge rockslide containing a boulder the size of a building has fallen into a major road in Colorado, blocking all traffic.

The road was closed indefinitely after one particular rock left an eight-foot crater in the ground, Colorado Department of Transportation said.

No injuries were reported.

The Montezuma County Sheriff's Office and the department said the rockslide occurred on Highway 145, about 10 miles (16km) north of Dolores, and that crews were working to clear the road.

They said they expected the highway to be completely closed in both directions for about 48 hours.


"The Sheriff is asking for your cooperation in avoiding the area so crews may concentrate on clearing the debris," they said.