Signal Knob is the northern peak of Massanutten Mountain in the Ridge and Valley Appalachians with an elevation of 2,106 feet (642 m).

[4] On August 14, 1864, a group of Union troops temporarily won control of the peak by defeating a detachment of the 61st Georgia Volunteer Infantry[4] but could not dislodge the Confederates and were forced to retreat back down the mountain.

[3] In October, 1864, Confederate Major General John Brown Gordon surveyed the Union position at Cedar Creek from Signal Knob and devised a plan for a surprise attack.

[5] In 2014 and 2019 on the 150th and 155th anniversaries of the Battle of Cedar Creek, rangers from the Cedar Creek and Belle Grove National Historical Park visited Signal Knob and shared with hikers the history of the mountain as well as descriptions of the Civil War reenactments happening in the valley below.

[1] An unimproved service road that is normally closed to vehicular traffic but available for hiking also leads up to the radio tower now located a short distance from the historic overlook.