It's little known fact about that one 'scientific' experiment how the used Moai was actually made out of fiberglass and plaster (?).
The fact how 2 out of 3 standing statues on the Easter Island (cc. 200 of them) may easily have bodies that are now berried up to 10 m.under ground is little more known off. Nobody of local authorities does not love to talk how the parts of Moai's under ground usually come covered with some perplexing symbols and markings - pretty understanding.
Do you ever wonder how many numerous centuries and even millennia the surrounding ground has to deposit itself naturally to engulf an object in center with all those vast cubic meters of soil (10 m.)? Sure you do, as do I.
And who in the right mind would want to honor his ancestor with one such strict, empty face and an worn-out posture?