Everything is off the cuff based off what I read in a novel recently. Basically the head of the Thousand Churches has announced a crusade and many people are heading to the capital to find out against whom he will declare it. The characters however were met by a strange half-elf from the east who has proclaimed the return of the No-god and the coming of a second apocalyse. So they are seeking ruins that might give some hint as to what they are up against and might lend some creedence to the half-elf's story.
Your character being human, will not have heard about this No-god person or any apocalypses as all have forgotten about it. The Glimmerwood has a strange tree at the center which is very large and twisted. It has a couple of strange runed pillars beneath it and most wildlife stays away because they say that bad spirits haunt the tree.