All of the walls from the PC version. SoD included.
Spoiler:Original Jaguar/Mac/3DO version textures. Note that some of the matching PC walls may appear strange (i.e. purple rocks are replaced by SoD gray rocks), but I checked the SNES version and this is accurate.
Spoiler:Missing walls, within the style of the Mac version.
Spoiler:This set further improves the wall textures to closely resembles the PC version.
Spoiler: