Reddish gravel staining and two small pieces of material that appeared flesh-like and tested presumptively positive for blood; Ertl did not know whether the material was human or animal

During Day 6 testimony, Ertl described reddish staining on gravel and two small pieces of material that looked flesh-like; each tested presumptively positive for blood. He said the material's human or animal origin was unknown and that further excavation found nothing more.