Prehistoric rock art is more commonly known as cup and ring markings. There are about 2,400 prehistoric carved rocks known in Scotland, such as those at Drumtroddan, and it is likely many more have yet to be discovered and recorded. Little is understood about why they were made or what they meant to the people that carved them. They date back over 5,000 years, and were created by the people that lived in the Neolithic and Early Bronze Age.