How were the Easter Island Moai statues moved to the position?

In Easter Island,there are many statues,but these statues were very big.So we will think about how the Moai statues were moved to the position.There are many thought about this.

First is there are many big log under the stone.When we need to move the statues into were we need.We just need to pull the rope that just stick in the statues before and make the log twirl.So when the log twirl, the stone will move.And this way to move the syatue are just like the way stonehenge is built.

And there's another way to move the stone.we can tie the rope in both two sides of the stonehenge,and people are divided into three parts.Tow group is on the each side of the statue,they will back and forth pull the rope.And the third group of man is on the back of the statue.When the tow group of man pull the rope,the third group of man will push the statue.And then the statue will move little by little.Then the stone will move to place.

And there are also many other thought about this question.Some poeple think they are made of alien or some thing else.And also there are people who think the stone walked where itself.But I agree with the reson two.Because it is more reality,and have more feasibility. This is the answer how the statues are moved to place.