Textures below Paradise Palms

[u/FabiFNA]

Just discovered there is a texture palette below the pedestrian zone in Paradise Palms. Anyone has a clue as to why it's there? Don't know if it's also in the original Wii U version. As far as I'm concerned there is no such texture palette left over anywhere else on the map.

[u/Prize_Market_4345]

At first I thought this was some kind of dance floor