Elliott Knob is the highest mountain in the northern half of the state of Virginia in the United States. At 4,463 feet, it is also the highest mountain in George Washington National Forest. The upper few hundred feet of the mountain are just within the Canadian climate zone and there is a small stand of Spruce on the summit. Otherwise Oak and Hickory tree species comprise the bulk of those found on the mountain.

Numerous large mammals inhabit the area of the mountain including Black Bear, White tailed Deer and Bobcat.

There is a Forest Service lookout tower which is closed to the public on top of the mountain. A primitive jeep trail ascends the mountain from the east but it is also closed to public vehicles. The only access for the public is on foot and along with the jeep trail, several other trails can be used to ascend to the top, each averaging 5 miles in length and climbing up to 3,000 feet from the trailheads. A small grassy cove is on the top and there is a spring 200 yards below the summit which flows year round.