A wildfire burning in the Flatirons near the National Center for Atmospheric Research was fully contained Saturday night, according to the Boulder Office of Disaster Management.

Firefighters gained 100% containment on the Dinosaur fire Saturday night, emergency officials said in a post on X. Fire crews will continue to monitor the area Sunday to make sure it’s fully extinguished.

The fire sparked on the second switchback near the Mallory Cave Trail on Friday morning burned across 4 acres — approximately three football fields — but did not lead to any pre-evacuation or evacuation orders.

Trails in the area are expected to reopen Sunday or Monday.