Artifact (Horror Rules)

From publisher blurb:

Sometimes things are buried for a reason. When dayhikers stumble upon the strange remains of an ancient, long-buried settlement in the hills of Las Calamas, CA, the characters are unwittingly plunged into a terrifying and mysterious tale. As archeology students at the nearby University of Las Calamas, the excavation falls to them - as do the prowling undead, powerhungry sorcerors and bizarre, unearthly phenomena that surround all who enter the dig. But the real fun starts when they find the artifact...