Anyway,
we have six points similar to the Bermuda triangle [at specific place around the globe] ... where physical things disappear and there are no traces found anywhere near the place...
There is no explanation for what happens at those six points [most of them in the oceans] - people can only theorize...
Theories:
1) a rock with properties that defies gravity i.e it has its own localised gravitational field that overshadows the earth's general weak field
2) that rock could be an asteroid
3) and most far fetched
An anti-gravity vehicle [from Atlantis or Outer Space] landed there many years ago and was buried by debris - this space craft's position is currently upside down pushing gravity towards the surface
etc etc
[I prefer the first two explanations, because number 3 never occurs in Africa (according to Hollywood scripts)]