Ok so today I got into one of my science kick moods, So i started searching up stuff and i came across this:
The "Lost" island is somewhere in the south pacific (leaving Australia, set for LA). Let's say (suspend reality for a minute) that the Bermuda Triangle is some crazy magnetic anomaly (maybe some kind of "black hole") that creates a wormhole to the other side of the Earth, the south Pacific. By this theory, something goes into the Bermuda Triangle, and winds up on the other side of the Earth. This would explain why Juliette departed from MIAMI, via submarine, and wound up in the South Pacific (and, yes, the Bermuda Triangle is just off the coast of Miami). So now for Atlantis. Some say that Atlantis may have been located around Bermuda (again, please suspend reality). The Bimini Road, found near the Bermuda triangle, is thought to be a remnant of Atlantis (google Bimini Road). This is my thought: Atlantis, because of the odd electromagnetism of the area (true magnetic anomalies in Bermuda Triangle), got sucked down, though some wormhole, and spit back out in the South Pacific. If the "wormhole" exhibits weird electromagnetic properties, that would explain the black rock found on the island, the electromagnetic phenomenon in the hatch, as well as the reason why compasses do not work (the bermuda triangle is one of the two only places on earth where compasses don't point north (well, geographic north) not to split hairs). So, if you were to try to navigate to the island, you couldn't detect it w/ a compass. A plane could get there, if it crashed. Also, this would be an explanation for the slave-trade ship found on the island (slave-trade ships voyaged through the Bermuda Triangle). I'm running out of room, so a few last points: Penny's workers detected SOMETHING they were looking for. And they were stationed someplace REALLY cold, like a POLE (s or n). I think the Widmores are looking for atlantis, and the poles are perhaps the only place to perceive the magnetic anomaly.
Give me your ideas on this theory