HYDERABAD: A 4,000-year-old prehistoric rock belonging to the Neolithic age was found with a bull bruised on it atop a hillock in the Moosapet mandal headquarters of Mahbubnagar district on Sunday. When Archaeologist and Buddhavanam consultant E Sivanagireddy were exploring the Ramaswamy Gutta temple, he found remnants of temple architecture belonging to the Rashtrakuta, Kalyan Chalukya and Vijayanagara periods.