Fight your way to the the surface as Black Mesa...
is it inspired by this (http://www.theblogbelow.com/2008/05/japanese-underground-sewer.html) location?
Guro Station, Nam(South) incheon, Baekgok and Saitama reservoir...(http://ssl.panoramio.com/user/217735/tags/Railroad )
You are not logged in, your comment will be anonymous unless you join the community today (totally free - or sign in with your social account on the right) which we encourage all contributors to do.
2000 characters limit; HTML formatting and smileys are not supported - text only