Unexplained Underwater Craters Found Off Coast of Iceland

[Andie]

What created these ?

 

http://mysteriousuniverse.org/2018/03/unexplained-underwater-craters-found-off-coast-of-iceland/

 

Geologists exploring the ocean floor near the shores of the city of Dalvík on Iceland’s northern coast have uncovered a mysterious series of craters which appear to be unnatural in origin, and they don’t know what to make of them. Researchers with Iceland Geosurvey, or ISOR, were conducting surveys to map sites for the future development of geothermal and hydroelectric power infrastructure. While mapping the seabed, the team discovered seven large craters in the seafloor, and the geologists can’t explain what might have made them.