The Toleston Shoreline is the third ancient shoreline of the precursor to Lake Michigan, Lake Chicago. It takes its name from the village of Tolleston...

Period, over 10,000 years ago. As lake water receded from the older Toleston Shoreline, wave and wind action accumulated sand in the current location of...

water receded from the older Toleston Shoreline, wind and wave action accumulated sand along the current Lake Michigan shoreline. This sediment was stabilized...