I have a NorHallSm1WayEndExSM01 that I want to lead into a CaveGL system.

I seem unable to locate a proper connection. How would I go about making that transistion

that looks and acts correct. I could also use a door but none seem to fit correctly

Any pointers would be appreciated.

Thanks

Trapdoor in the floor? that seems to be the most-used method. Or is it important that it be a single cell?