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Roachtown topographic map
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About this map
Name: Roachtown topographic map, elevation, terrain.
Location: Roachtown, Saint Clair County, Illinois, United States (38.44311 -90.06094 38.48311 -90.02094)
Average elevation: 538 ft
Minimum elevation: 469 ft
Maximum elevation: 594 ft
Saint Clair County trails, hiking, mountain biking, running and outdoor activities
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Other topographic maps
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Cahokia Mounds State Historic Site
United States > Illinois > Saint Clair County > Fairmont City
To the south of Monks Mound is the Grand Plaza, a large area that covered roughly 50 acres (20 ha) and measured over 1,600 ft (490 m) in length by over 900 ft (270 m) in width. Researchers originally thought the flat, open terrain in this area reflected Cahokia's location on the Mississippi's alluvial flood…
Average elevation: 420 ft
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