They are Hinayana Buddhist caves that were excavated sometime in 150-300 AD.There are in all 31 caves.
They are mostly Buddhist viharas located on a hill top.
There are stone steps that take you to the top and can be accessed in hardly fifteen minutes.
There also exist a few carvings of lord Buddha , the Bodhisatvas along with attendents on the vihara walls and pillars. But they seem to have abraded with time. There is also a shilalekh in the brahmi script carved on the wall of one cave.
The ambience surrounding these caves is awesome, especially in the monsoons, when the entire hillock gets wrapped by a green blanket and is adorned by several rivulets and water cascades.