Although, you could think of a rock as solid magma.

That did not make sense. They were not above a magma chamber.

And as these tectonic plates are spreading apart, magma, lava is coming up and filling those gaps, and you're looking land new land being created right before your eyes.

And then we had some hint that these things existed all along the axis of it, because if you've got volcanism, water's going to get down from the sea into cracks in the sea floor, come in contact with magma, and come shooting out hot.

And over the tops of them is 3,000 to 4,000 meters of water creating enormous pressure, forcing water down through the cracks toward the center of the earth, until it hits a magma chamber where it becomes superheated and supersaturated with minerals, reverses its flow and starts shooting back to the surface and is ejected out of the earth like a geyser at Yellowstone.