The village of Orongo consisted of about fifty stone dwellings, in two rows, facing the sea. Some of the dwellings were at the very edge of the cliff, separated by large rocks, some of which were carved (Figure 62). Since the site is exposed to strong winds, the houses were low and built of flat stones. The walls were generally six feet thick but the shapes and dimensions of the rooms were very variable. Some of them had rather odd shapes, as determined by the natural arrangement of the rocks.
The entry into these dwellings was a small opening that was only 60 centimeters high. The interior was never more than four to six feet high so it was barely possible to stand upright. The interior was, basically, eight feet long and four feet wide. Some rooms communicated via a door; others had a simple opening for passing food back and forth. In the ceiling, in the middle of the slabs that formed the roof, was an opening for ventilation 116. At some points in the walls, there were niches that were fifteen inches deep and one or two feet high that were used for storage 117.
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"Houses, however, did exist, which were built in the form of a long upturned canoe; they were made of sticks, the tops of which were tied together, the whole being thatched successively with reeds, grass, and sugar-cane. In the best of these houses, the foundations, which are equivalent to the gunwale of the boat, are made of wrought stones let into the ground; they resemble the curbstones of a street pavement save that the length is greater. In the top of the stones were holes from which sprang the curved rods, which were equivalent to the ribs of a boat, and formed the walls and roof (figs. 84 and 85)The end stones of the house are carefully worked on the curve...
Two entirely different cultures...and who built the stone wharf?
Spherical Boulder, large and small... 
the red-headed 'Mayor' of Easter Island in his secret cave - Thor Heyerdhal image.