Talia would lead them up one side of the hill the fortress stood on, and they'd note, almost conspicuously, that there were no guards watching this approach. The area is dense with shrubbery, making travel difficult, and providing poor sightlines, and Talia would warn the pair that the zombies were lurking in the undergrowth, when they struck.<br/><br/>A DC 20 Perception check spots one of the zombies, still partially buried in the dirt, hidden by the plants covering the hill.