The Ancient peoples had a very large flint quarry within their lands. This quarry had already been mined for thousands of years, and the flint was prized all over North America, partly because it comes in a rainbow of colours.
As a result of their quarrying activities, a number of hollows were formed creating small wetlands. Flint Ridge was already a different ecosystem from the surrounding area because the flint is so extensive and lies close to the surface, but the wetlands encouraged even more diversity.
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