Being on the frontier like that, you will occasionally see some realm-killer rogue forces wandering around. Sometimes the only thing you can do is get out of their way, and hope they keep moving on. As odd as it might sound, you're lucky you're near the Zuma. I'd bet they actually keep the rogue forces in the are pretty well under control, so you don't get the massive concentration of rogues that you see in the northwest, or the central eastern mountains.