[HELP] Batcave map addition

Hello,

I am trying to get a Batcave into my role-play server for a some new role-play scenarios that my community would like to do. I have been looking all over and have been wondering how to get a .ymap for the maps out there. I have looked all over the internet with no help. Anyone want to chime in?

TS Server: ncsrp.zapto.org
Discord: Tiggythetiger#5469

Thank you in advance.