When Taviss brings Ari, Jango and Khalia into the small cavern room, all three begin to look around to see what's to be seen. Skarghash stays by the stone doorway and keeps his crossbow pointed down the dark tunnel in case anyone or anything comes up through the darkness. Taviss keeps his eyes on the tunnel that they all arrived from.
Ari looks through the equipment and finds most of it to be in relatively good working condition, except for one pickaxe which is broken. He opens up the first chest and finds some bread, some hardtack, and two stoppered jugs of an unknown liquid (when smelled, there is no aroma... water perhaps?) This obviously looks to be a supply chest.
The other smaller chest is locked, but upon asking for help from Skarghash to get it unlocked (Open Lock: TN 20 / 12+13=25 *success*) Ari finds within it three cases of 10 crossbow bolts each that are designed more carefully and intricately than standard bolts. There are also three golfball-sized translucent crystaline shards that have veins of dark blue and black running through them. This was the same kind of crystal you had oringally gotten off of the lizardman you killed two days ago that you presented to Tharashk's head of house in town.
[sblock=Khalia: ]You immediately recognize them as Khyber dragonshards, useful in binding elementals and creatures to create magical constructs. (Knowledge Arcana check TN 15 / 9+10=19 *success*)[/sblock]
Jango keeps his lantern shut and walks over to the other tunnel entrance and keeps his eyes on the fifty plus feet of distance the light from torches in the small room throw.
Khalia wanders over to the stone doorway and looks at the designs that were intricately cut into the walls. The designs have a familiar look to them... the way the lines flow and weave they look quite a bit like the designs of dragonmarks. You know from your studies that these designs have appeared on all kinds of things over the millenia, and that they are important clues to unravelling "The Prophecy" that the world's dragons have been studying. It is only in the very recent history of humanity that these designs have begun appearing on humanoid beings in the form of dragonmarks. The doorway doesn't look like it was carved out of the solid rock, but rather that it was "inserted" (for lack of a better word) into the tunnel's mouth. You know personally several members of the various druidic sects that can magically manipulate stone, so it's quite possible that this stone doorway was built (but if that's the case, then the dragonmark-like designs had to have been carved in manually).