
The southern Illinois orchard country and the high ridges of the Shawnee Hills define this modern survey of northwestern Union County. The village of Alto Pass sits at a significant elevation gap, overlooking the Alto Pass Reservoir and the headwaters of Cave Creek. To the south, the terrain rises toward the prominent landmark of Bald Knob, which is protected within the Bald Knob Wilderness. This landscape is deeply etched by a network of waterways including the Seminary Fork and Clear Creek, which have shaped the settlement patterns of rural communities like Mountain Glen and Kaolin.
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This is the sole edition of this map. No revisions or reprints were ever made.
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