High Knob in Focus High Knob is at the heart of the Clinch Valley Bioreserve, a 2,200 square mile section of southwestern Virginia and upper east Tennessee that has been designated by the Nature Conservancy as one of the Last Great Places in the World. The gradient of forest communities between the Clinch River and the 4,223 foot peak of High Knob is home to more rare and endangered aquatic and botanical species than any other region in the continental United States. High Knob stretches into three counties and any decisions about its use will impact the health, recreation, and livelihood of these people as well as the mountain's amazingly biodiverse ecosystem.  High Knob is worth protecting because the mountain... is the source of many local communities' drinking water provides recreational opportunities --- hiking, running, horseback riding, biking, kayaking, canoeing, hunting provides revenue by attracting tourists from around the world is a unique and biodiverse ecosystem Read more: Plan your visit Unique features of High Knob Bird life of High Knob