ON A DRY, WINDY DAY in August 2020, archeologist Ernie Walker was visiting Wanuskewin Heritage Park's newly acquired plains bison herd. The bison had worn away the vegetation by rolling on the ground taking dust baths. Looking down, Walker noticed a protruding rock with a groove cut across the top of it. Assuming the cut was from tool damage, he brushed away the dirt, exposing even more cuts - and that's when he began to get excited. "When I realized that it was a ribstone," he says," I tried not to have a stroke."
NSTL
