[Dirt*PR*]

is "edoor" under buildings section...the epytian door for tunnels...if u use it u will most likely have to lower its Z value...its larger than walls. but for a tunnel u might not have to lower it i guess.

just for more info... everytime u open this door it will make that sound. also... it spins from the center so u may have to put it off to one side more. unless the opening is large enough for ppl to still get through.