Silver Mound is a sandstone hill in Wisconsin where American Indians quarried quartzite for stone tools.
[4] This is not long after the last glacier began retreating a short distance to the north, when the climate remained cool and mammoths and mastodons still roamed the area.
These tools could be made from the quartzite from Silver Mound, which was the largest source of orthoquartzite in the Midwest.
Tools made from Hixton orthoquartzite and datable to this period have been found as far away as Mammoth Cave in Kentucky.
By 8,000 BC the mammoths and mastodons were extinct, but Archaic Indians needed points to hunt large, now-extinct bison, elk and deer, and some quarried orthoquartzite at Silver Mound.
In 2006 it was named a National Historic Landmark,[2] largely because of the potential information it may still hold about the earliest people in Wisconsin.