Your horror replaced by curiosity, you follow the arrow. Coming to what you think is the mountain face, you realize a very narrow path snakes its way through the rock.
Squeezing yourself along the path is quite claustrophobia-inducing. Being trapped inside your bulky spacesuit doesn't help, either. After several minutes you pop out into a wide open expanse.
You notice two things almost simultaneously. First, you are encased in a huge dome that stretches for miles. Second, in front of you stretches an exact recreation of Moscow's Red Square. Gleaming spires top nearly every building. You take in everything, confused, as you pass over the concrete expanse between you and the buildings. Near an open doorway lies a Makarov PM military pistol.