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Opposed 4 m walls with a clear 1.35 m-wide walkable slot.
This model needs no credit. This line says where it came from.
"Slot canyon wall pair (Desert Canyons and Oases)", from 3DAssets.dev (https://3dassets.dev/assets/desert-canyons-and-oases-slot-canyon-wall-pair-7b14e15c), CC0 1.0
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