I think the sand would cough it up. Things that are buried have a way of not staying buried, even in dry ground.
Also, in stand, remember the way the water would come rushing in and destroy the hole at a certain depth?
SM:
Edmond of Top 95.1 commenting on the Nat. dissapearance, casting doubt if a young teenager Joran would have the expertise to pull a caper like this, that not even a hair is found. He feels the amount of focus of the Arubian LE is too focused on the 2 suspect. He reports that the tips of 2 men taking Natalee by force is not being followed up? Reports of Hotel employee is also confirming this but the LE is not following up. The theory of possible a second party sequestering Nat is possible. Another talker is mentioned perhaps a tag team of a second may have taken Nat. Counter argument said that he can't believe a 17 yr would have enough life experience to have a well thoughout crime. He does not believe Joran has the character to pull it off.
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Edmond keeps thinking the 2 strangers may have contacted the Chaparone, perhaps the drug dealers near Holiday Inn. He states that strange occurences was going on near HI, but police is not following leads. His counter associate, is asking what happened afterwards, their motives etc. .. He feels there is a probably some kinda of fallacy that may have come out already. What if Joran does not know anymore, he mentioned a girl being hysterics.. but Ed says that Hotel workers say that a girl was taken away. He states people that knows need to take courage to give tips.