Trimble Knob is a Summit in Highland County. The plug of an ancient volcano, Trimble Knob is the youngest volcano in Virginia. Trimble Knob is visible from US 220. The nearest major town is Mill Gap, VA.
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Last Updated: 05/25/2017
Trimble Knob is a Summit in Highland County. The plug of an ancient volcano, Trimble Knob is the youngest volcano in Virginia. Trimble Knob is visible from US 220. The nearest major town is Mill Gap, VA.
Last Updated: 05/25/2017
