Andy glanced back at the older man, expecting a sarcasrtic expression to go with the words. When he didn't find one, he snapped back to looking straight ahead, blushed deeply at the compliment. He wasn't used to them. He moved back into the corridor, having closed his eyes and waited a few seconds for his eyes to adjust, and brought up his glow-rod.<br/><br/>There was no apreciable tilt to the tunnel, which was a pity, as downhill would almost certainly have been towards the sea, and therefore the right direction for the camp. Failing that, he cast around, sniffing the air from both directions, trying to sense which was fresher. That was likely the closer subway station, a place to find a map, and a route to the surface if necessary. This far underground, the GPS on his computer would be useless.<br/><br/>After a few seconds, he moved off in the direction he thought had fresher air, then stopped to check the rest of the 'party' was following. "This way. There should be a station up ahead. We should be able to figure out where we are there."