Grung Grimaz Falls

They came from within the very mists that hang above this place, hordes of greenskins flanked by Dark Elves on fell beasts. We held as long as any Dwarf could, but in the end, we were forced to make our way here as Grung Grimaz fell. When my scouts encountered the greenskins, they were accompanied by Dark Elf sentinels. It looked as if the greenskins were actually following the Dark Elves, if you can believe that! A greenskin might eat one of them Elves, but it ain't likely going to follow one into battle! If we're to mount a counterattack and reclaim the fort, we've got to find out how they're getting across to Grung Grimaz, and put an end to it!

Head far south into the Snow Pass and locate the High Elf ruins near Slayer Springs. Find the Dark Elf, Sentinel Rashyl, and read the Coded Text that he carries. This should shed light on how the greenskins are getting into Kadrin Valley. To read the text, you must use the item in your inventory.