Third Hill Mountain is located in Berkeley County

Berkeley County, West Virginia

Berkeley County is a county located in the Eastern Panhandle region of the U.S. state of West Virginia. As of 2010, the population is 104,169, making it the second-most populous county in West Virginia, behind Kanawha...

, West Virginia

West Virginia

West Virginia is a state in the Appalachian and Southeastern regions of the United States, bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the northeast and Maryland to the east...

 in the Eastern Panhandle. Third Hill Mountain reaches its highest elevation of 2,172 feet (662 m) above sea-level southeast of the "Locks-of-the-Mountain" where it "locks" with Sleepy Creek Mountain.

Adjacent area

Together with Sleepy Creek Mountain

Sleepy Creek Mountain

Sleepy Creek Mountain forms the border between Morgan and Berkeley Counties. Together with Third Hill Mountain, the two mountains contain between them Sleepy Creek Lake and the Sleepy Creek Wildlife Management Area...

, the two mountains contain between them Sleepy Creek Lake

Sleepy Creek Lake

Sleepy Creek Lake is a impoundment of the Meadow Branch of Sleepy Creek in Berkeley County in West Virginia's Eastern Panhandle. The reservoir is located at an elevation of 1,086 feet on the Sleepy Creek Wildlife Management Area, which lies within both Morgan and Berkeley Counties...

and the Sleepy Creek Wildlife Management Area. Sleepy Creek and Third Hill Mountains are distinctive for their height in the relatively level terrain of the far Eastern Panhandle region of West Virginia.