RAWLINS, Wyo. (AP) — Firefighters are slowing the spread of a wildfire burning in south-central Wyoming's Carbon County.

The Ferris Fire, about 30 miles northeast of Rawlins, has burned about 8,800 acres and was 63 percent contained Monday.

Fire managers say crews have been able to hold the fire on the north, east and south sides. However, steep, rugged terrain on the west side of the fire has made it harder to stop the blaze there.

The cause of the wildfire, which was first reported July 27, remains under investigation.