ooc: Wow, ok...
Firete quickly notices the taint of necromancy bound within the rune. It's clear that this is some sort of trap or obstacle, for passing over the rune (they spread over the entire path) would trigger the latent power against anyone nearby. Those affected would temporarily be overtaken with unnatural terror which would mostly likely cause them to flee. She also surmises that it would be extremely difficult to disable the runes, although jumping over them shouldn't prove too taxing.
Also, as she investigates the rune, Firete sees that the path again splits to the west, down which she can see a number of other passageways. From the southern ones the gray light emanating from Yishim's sunrod can be seen. Apparently you are in a small network of tunnels.