Thor's Well, Oregon in USA

Nicknamed the drainpipe of the Pacific, Thor's Well seems, by all accounts, to be taking water from the actual ocean. The normal sinkhole is settled on the shoreline of Oregon, near Cape Perpetua, and is remembered to have begun as an ocean cave that in the end imploded into itself. Remembered to associate with 20 feet (6m) profound, the opening turns out to be significantly more hypnotizing at elevated tide or during extreme tempests when water viciously whips over the stones.