Zastik tells you they've found the Drednever crash site, but an archaeologist has gone missing.
Find Drukin somewhere in the Shattered Wier.
Drukin has slipped and fallen and is clinging to the side of the island across from -750, -455, 175 . His gear is above him at -771, -450, 170 . If you're very careful you can get down to him near the land bridge. HINT: Turning off all your runspeed buff helps.
Speak to him and the quest completes.
NOTE: If you are doing this in a group, have one person at a time talk to him and shoot at the bone, after a min ot two he will respawn on the rock ledge and the next person can have a go.