The yellow brick road in the sea
A team of marine biologists discovered what appeared to be a yellow brick road on top of an undersea mountain near Hawaii. The roadway had what looked like man made bricks laid side by side at neat 90-degree angles. It turned out to be a natural formation from ancient volcanic activity thousands of feet below the water's surface.
https://www.sciencealert.com/scientists-find-a-yellow-brick-road-in-a-never-before-seen-spot-of-the-pacific-ocean