With his torch lit Gardakhan searches the cave for any traces and is only mildly surprised to not find any traces of tracks larger than those of a serpent and some rodents. Some spirits are known top "ride" animal if they require a physical form to travel. Other can move freely while some are trapped to a specific location and can only project their powers.
Confident this spirit must have traveled from elsewhere he casts out his senses and feels a trace of a chilling and dark presence from one of the passageways. Moving carefully down that passage he winds his way deeper into the earth. Aster several minutes the cave begins showing signs of artificial modification. Gardakhan definitely sees traces where something, r more likely someone, changed the shape of sections of the tunnel to allow easier passage. The changes show no tool marks but the way the some is shaped seems oddly regular though he guesses whomever did it tried to make the stone look like what they thought was natural stone.
Having descended well over a hundred feet below the surface above and at least a quarter mile into the cave he pauses as his torchlight reveals a flash or something white ahead. With a slight suspicious Gardakhan douses his torch and is greeted with the sight of dim outlines of the nearby rocks. I will Some of the rocks have tiny traces of luminescent fungus. I will The glow barely makes the rock within 10 feet discernable but it does give enough light to move quicker than a crawl. I will Looking back Gardakhan has a moment of unease as he notes that a slightly brighter trail can be seen where the heat of the torch causes the glow to slightly brighten. I will If the spirit has already left the cave when it comes back it may notice this and be aware of Gardakhan presence.
Now without his torch lit he moves closer to where he saw something bright on the cave floor. I will As he gets close he can see a square section of the floor is covered in strange tiles. I will The tiles do not glow from the fungus but are so polished and smooth that they reflect even the fungus dim glow. I will This is what he sees.
[ +- ] tiles
roll for DM to give hints
As he studies the tiles they suddenly begin emitting light and humming. Both be the light and sound increase in intensity.