A 2.5-million-pound boulder is now nothing but rubble after road crews blasted the massive rock Sunday night.

The boulder was part of a huge rockslide that destroyed a stretch of highway in southwestern Colorado Friday afternoon, leaving crews with a daunting cleanup job. It wasn’t even the largest boulder; a boulder weighing a whopping 8.5 million pounds tumbled over the road during the slide and left an 8-foot-deep trench where pavement once was.

“It’s truly mind-boggling that something that big came down,” said Mike McVaugh, CDOT Regional Transportation director for southwest Colorado.

The Colorado Department of Transportation says trucks are hauling away fragments of the 1,150-ton (1,047-metric ton) rock from state Highway 145 while workers build a temporary bypass.

That bypass could open Tuesday or Wednesday.

The Cortez Journal reports workers drilled 15-foot-deep holes into the rock to insert explosives before blasting it apart on Sunday.

That was done after workers checked the stability of a ridgeline 1,000 feet above (305 meters) from where that boulder and another fell on Friday.

The second boulder crashed across the road, creating an eight-foot trench. No one was hurt.

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