Known as the "drainpipe of the Pacific," Thor's Well likely formed after a sea cave collapsed. One of the most mysterious natural wonders of the oceans is Thor's Well, which resembles a bottomless abyss and seems to be robbing the sea of its water. In reality, Thor's Well is the collapsed ceiling of a sea cave that was carved out by water and left in ruins. Thor's Well, … [Read more...] about Thor’s Well Is An Oceanic Sinkhole That Appears To Have No Bottom.