I have a concept of the walk-in aisle of my layout being a river or small bay, so I am making my scenery (rocky banks etc.) all come down to a common level as it would be meeting a bay.
Series of shots, showing rocky banks coming to a common level.
Bank by the concrete arch bridge
Continuation of banks at bay level
Further along the bank
This showing my suspended edge, not yet fully built up with scenery
This shot from a low level showing the way the edge is built
My thought is to build a rolling cart with an area of bay level water that can be raised into position anywhere along the walk in aisle, for photography of the layout, with extended water.