The cracked rocks got discarded when they were too small. Spicer sent several away for testing. Traces of pronghorn, rabbit, whitefish and trout, wild onion and sunflower were found on the rocks, but not in the soil around them, indicating the residue is likely from a soup.
To find the age of the fire, Spicer turned to fragments of several buffalo ribs and a leg bone that were found nearby at the same depth in the soil. He sent them to a lab for radio carbon dating and got dates back of 2010 and 2030 BP, or before present.