No, this is not Thor's Well. It is O'Omo Apuhua'a Hawaiian Reserve. The water comes into a lava tube on the left side of the opening out in the ocean. It pushes water up and out of the opening all over the lava outcropping. Within a minute or two the water on the lava area then flows back into the hole. I was shooting with my 14-24mm lens and only about 2' from the opening. Timing works best when waiting for the water to go back into the opening.
14-24mm Nikon · f/16 · ISO 64