Complex sentence: This complex of very well-preserved Theravada Buddhist caves, built on the difficult terrain of a rocky hillside, is one of the finest examples of the ancient rock-cut caves to be found in India.
Split into simpler sentences: This complex of, very well-preserved, Theravada Buddhist caves is built on the difficult terrain of a rocky hillside. The complex also happens to be one of the finest examples of the ancient rock-cut caves found in India.