The journal says that a couple went hunting for a monster called Uderfrtyke Matron. Opent the sack an read the journal there should be some familiar names if you've played Morrowinds blood moon expansion package. When you get to dive rock there should be a tent and a sack near the edge of the cliff. It's difficult to get to because it is high up in the mountains, but I found a path by the camp of the master acrobatics trainer. To get the frostwyrm bow, go to dive rock in the valus mountains, north east of cheydinhal.
