Scientists in Norway have caused a stir with their announcement this week of giant craters in the Barents Sea, which they believe were formed by exploding natural gas. The scientists have even suggested the phenomenon could explain the mysterious Bermuda Triangle—a highly controversial concept.

Researchers at the Arctic University of Norway have described craters off the coast of the country that are up to a half mile (0.8 kilometer) wide and 150 feet (45 meters) deep. They appear to have been caused by the explosive release of methane, also known as natural gas, that was trapped in the sediment below.

Such sudden releases of gas could potentially pose a danger to ships, the scientists note. It might also explain reports of missing ships and planes