One of probably the most fascinating archaeological mysteries is the invention of the so-called Cochno Stone.

The 5,000-year-old Cochno Stone measuring 42 ft (13 m) by 26 ft (7.9 m) and regarded as one of many most interesting units of petroglyphs is a big Cup and ring marked rock at Auchnacraig, Faifley, West Dunbartonshire in Scotland and was rediscovered in 1887 by the Rev. James Harvey.

The mysterious stone options round 90 carved indentations that in keeping with some researchers signify an historic cosmic map detailing planets and stars.