Since I read a book about Native Americans when I lived in Germany, I wanted to visit the marker where the prehistoric site of Clovis-aged people fire hearths had been found in 1951 due to the excavation for the Lewisville Lake Dam, which contained Hackberry seeds, fish, birds, tortoises, rabbits, squirrels, mussels, and bigger animals like mammoth, bison. wolves. coyotes and several more. The first investigation took place between 1951 and 1957. The second investigation was between 1978 and 1980. Due to the severe drought in North Texas, the site was more investigated in the late 70s. In 2006, I found the marker. We had an extreme drought that year as well. But the site was still covered by water.