Complete the Trial the Vex have set before you.
- The Strange Harpy will teleport back onto the rocks leading out of the Sunken Cavern.
- Climb up the floating rocks to meet with the harpy to complete this section.
- The first time you meet with the Harpy, it will have a little more to say about what happened with Captain Jacobson.
- It will lead you back up the rocks to the ledge where you entered from.