Controversial History: Did Ancient European Celts travel to Oklahoma? I traveled to Western Oklahoma and Southeast Colorado to investigate the claims that an ancient script called Celtic Ogham can be found on the rocks in the canyon country. I personally believe that these were carved by Native Americans, as I’ve seen similar markings all over the Americas…the question I have is why does it resemble Ogham and is it some type of script with a message? #history #explore #mystery #oklahoma #Colorad