for the quest "A Daughter's Revenge - I. To Feast on Human Flesh" in the cannibal cave(eiglophain mountians area) once you find the first wormhole and use it. just log off and back in and you can use the same worm hole again. This saves you trying to find all 5 of them.
i found this out as i got stuck in a wall looking for the last one. after logging i was able to click on a wormhole i had already used to complete the quest. (i still have no idea where that last wormhole is!)