National Geographic : 1921 Dec
THE SEAWARD SIDE OF ONE OF THE EASTER ISLAND BURIAL PLACES,AHU MAHATUA These impressive piles of stone are supposed to have been erected by prehistoric Easter Islanders as resting places for their dead. They are known as ahu and are found chiefly near the seacoast. On these burial platforms stood most of thegreat images that amazed the early voyagers. For the plan of their construction, see diagram, page 644.