Clinch Mountain and the parallel folds of Copper Ridge dominate this section of Grainger County, creating a landscape of narrow valleys and isolated hollows. Between these ridges, the settlements of Avondale and Thorn Hill are defined by a complex network of springs, including Red Sulfur Spring, Lithia Spring, and White Sulfur Spring at Avondale Springs. These water sources were historically significant for local communities and travelers moving through Notchy Gap or along Richland Valley.
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1883 · Morristown
USGS Topo · 1:125,000
1893 · Morristown
USGS Topo · 1:125,000
1895 · Morristown
USGS Topo · 1:125,000
1897 · Maynardville
USGS Topo · 1:125,000
1900 · Maynardville
USGS Topo · 1:125,000
1935 · Tate Springs
USGS Topo · 1:48,000
1935 · Straw Plains
USGS Topo · 1:48,000
1935 · Joppa
USGS Topo · 1:24,000
1935 · Howard Quarter
USGS Topo · 1:24,000
1935 · Swan Island
USGS Topo · 1:24,000