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.
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Series of shots, showing rocky banks coming to a common level.
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Bank by the concrete arch bridge
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Continuation of banks at bay level
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Further along the bank
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This showing my suspended edge, not yet fully built up with scenery
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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.