it s a very cool map !!!

Check out b2 version

Original map zs_fork_underground_b2 , so thats not mine (both was made special for N5 zs server). But it more compacted version of previous map

I appreciate that this is more or less a massive extension of that one underground facility in the original gm_fork.

Although, it is funny how a railroad tunnel is directly in front of the entrance where there would normally be the outdoors and a wooden bridge leading to it and the majority of this map is occupying that same outdoor space from the original map.