 | (Left) Mysterious megalithic temple of Nan Douwas rises above the canals of Nan Madol, Ponape island, Micronesia. (Right) Ponape has a natural outcropping of prismatic basalt which was employed in the construction of all the major temples on the island. |  |
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 | (Left, above left, above, above right) Prismatic basalt blocks disappearing under water around the main temples of Nan Madol - which seem to be built over some kind of substructure now deep beneath the waves. (Right) At greater depths strange shapes begin to appear. |  |
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 | (Left, above left, above, above right, right) At depths of up to 40 metres, a forest of columns protrudes from the slope of the sea bed in front of Nan Madol. |  |
(Right, far right) Fallen underwater columns, Nan Madol (below) Fallen 'Latte Stone' megalithic column, Tinian island, Northern Marianas |  |  |
 | (Right) Small upright underwater column, Nan Madol. |  |
 | (Left) Small upright Latte Stone, Guam. (Right) The House of Taga: a forest of megalithic columns, Tinian. |  |