English: This monolithic granite rock found in Mahabalipuram India, is over 20 feet in height. With its width almost equal to its height, it is looks spherical in some angles but not a perfect sphere. This mysterious rock is known as Krishna's Butter Ball in the last 50 years, although its original name is "Vaanirai Kal". It weighs over 250 tons and miraculously stands on an extremely small, slippery area of a hill. This fantastic rock raises some serious questions to us. Many people think of this rock as a natural formation. However, such a natural formation is highly impossible. There is no way it could have come to this shape by erosion, water flow or the blowing wind. The rest of the area is a smooth hill, and is devoid of any other large rocks. Having established that this is not a natural formation, who could have put this here? Even in modern days, moving a 250 ton rock uphill would be a very difficult task and require complex equipment such as cranes. How did the people do it 1200 years ago? Look at how the rock stands on the hill. The rock stands on less than 4 feet area on the hill. Even a layman knows that a wide base is important for a structure to last longer. How does a 250 ton rock stand on less than 4 feet base? Is it possible even with our modern technology? Also, notice where it stands: Not on a horizontal plane, but on a slippery slope. Imagine placing a ball on a ramp, how fast would it roll down? How does a rock standing on a slippery slope stand there for 1200 years?