My pleasure. I don’t find the photos to be compelling evidence, but at the very least it probably shows a debris line from a tsunami — back when the sealevel was much lower for one reason or another. :’) Almost grounds for a Catastrophism ping...
Maybe, but being a rock guy I perked up at this: "How were these huge stones of Laterite and Deccan Trap variety transported to the coast?"
I'm not that familiar with the occurrence of those rock types in the immediate area. If they indeed are "foreign" it raises interesting possibilities.