The standing stones are on the very edge of town, obscured by thick trees, who's leaves are brilliant orange, red and yellow. A cool wind sighs through them, covering any sound from the village behind you. The sky has darkened and cooled, as if more rain were imminent.
The stones themselves are foreign, and somewhat disturbing. They are jet black, and cold to the touch. There is a strange sense around them, as if they were somehow watching and listening to you as you enter the circle. You each have a strong urge to whisper and keep hidden
(You don't have to actually do so, but you have a strong feeling to do so whether you choose to or not). They have strange, worn carvings on them that are vaguely disturbing, although they are so worn that it's very difficult to discern exactly what they are supposed to represent.
Even to untrained eyes, the site looks disturbed. The grass and ground are heavily trampled and rutted, and many of the trees and shrubs in the area are torn and broken. There is a miasmic smell that makes you each feel nausous
(I may need Fort saves to resist affects--you can go ahead and make them now, if you like, even if it doesn't come up after all). The smell is strongest around areas that seem smeared in an otherworldly blue slime.
Also, crudely written on each of the stones themselves in a dark, myterious drying fluid
(Survival check might identify--I know we lost the ranger and the druid, but does anyone else have any ranks?) is the following script, in runes that none of you recognize.