The mark on the rock was made, apparently when col. G V Raja went on a pilgrimage to Agasthyakoodam sometime in the 1930s. Being a member of the Royal family of travancore, he had an entourage of about 100 people with him to ensure his comfort. This particular depression was made to use as a grinder for cooking. This is what I heard from our guide during our trip to the peak way back in 1978…