This week Neil MacGregor is exploring the sophisticated ways in which people connected to gods and ancestors in the Middle Ages. He is looking at religious images from India, France, Mexico and Turkey.

Today - in the last programme of the second series - he is with one of the most instantly recognisable sculptures in the world: one of the giant stone heads that were made on Easter Island in the South Eastern Pacific Ocean. These deeply mysterious objects lead Neil to consider why they were made and why many were ultimately thrown down.

What was the Easter Islanders understanding of their gods and their ancestors? Steve Hooper, an expert on the arts of the Pacific, and the internationally renowned sculptor Sir Anthony Caro both respond to this monumental work of devotion.

Producer: Anthony Denselow