Now that they knew there was something out to get them, the group could travel with appropriate precautions.  Vision was an issue, so Chay was finally forced to bow to tactical necessity and hand over the goggles and the map to the one person with effective distance attacks (thrown knives were useful, but not nearly so much as spells).  With Cersei navigating, the team was able to move in the darkness with weapons drawn.  They avoided drill-holes, vents, and smaller shafts, sticking to the larger passages where they would have sufficient fighting room if the situation called for it.<br/><br/>The slithering sound followed them, occasionally audible above the gentle rushing of the air system.  Once they felt the temperature drop and the air pressure press upon their ears.  At those times, they did the sensible thing and froze in place, looking around carefully for any attack.  None came, and soon enough the sensations went away, and the mine was only as dank and chill as it usually was.<br/><br/>As they moved lower, the tunnels got slightly narrower.  Not as much ore was extracted at this level, so the tunnels hadn't been mined so widely yet; mining operations went pretty slowly anyway, given the comparatively few professional miners and the only moderate demand for resources.  The central parts of the passages were still the standard mine height, but the ceiling sloped fairly quickly off to each side, down to a more dwarven height near the walls of the space.  Stacks of tools, ore, and supplies were more common the farther down the party went as well, showing the activity levels of mine.<br/><br/>Finally, they stood in a larger chamber with a mine track running through it against one wall; this was the closest sixth-level access, a wide shaft that had a wooden ladder against one side and a winch and pulley ore cart system run by an Ever-Spinning Wheel against the other side.  There were some full mine-carts that hadn't been moved up, and some tools looked as though they had been abandoned in a hurry, just casually dropped or tossed aside.