There has been activity at this site as recently as 7,600 years ago, though more likely less than 1,000 years ago. Kostal Cone is too young for the commonly used potassium-argon dating technique (usable on specimens over 100,000 years old), and no charred organic material for radiocarbon dating has been found.
The site's age is difficult to determine because it lacks suitable dating methods. The lack of suitable dating techniques due to limitations in potassium-argon dating (usable on specimens over 100,000 years old) and the absence of charred organic material for radiocarbon dating makes accurate dating challenging.