[Captain Beyond]

Or it could have been one those whacked out business ideas where some guys sees Egypt and goes “Wow if we could make a bunch really big statues and ship around the world we could make a millions easy.” Then he finds out that he on the tail end of the Statue bubble market and is bankrupt all of sudden and what is left is an island full of statues with no place to go. Or it was a really bad idea for shipping drugs to another country or planet. Thinking “Like wow man no one is going to search a monolithic statue for our cocaine stash.”

[UCANSEE2]

OK.

Two theories. One to match each of your responses.

First. They built the statues to ‘protect’ themselves from seafaring travelers. They thought that passing ships would see these GIANTS everywhere, and decide it best not to come any nearer. The Islanders didn’t want the disease, slave taking, or pests that come from seafarers.

Second. Aliens used to visit, and they wanted to scare away the aliens. Size being the relevant issue in scaring the aliens as well. If true we would know that the aliens are at least somewhat smaller than the Easter Island Statues.