The megaripples are not just ordinary sand formations; they are the product of an incredibly violent, Earth-shattering event.

Additionally, unique geographical formations underground created by ... Furthermore, mega ripples differ from how sea waves create ripples on sand beaches, and this is because a massive earthquake ...

Mr. Cornish showed photographs of ripple-marks mimicking organic forms ... in the lee of the larger grains. Similarly the formation of sand reefs or waves had been observed in the Mississippi ...