Search bones at -221,-27,-607. Easy way, take the Whirling-Arm Prototype 16 launch as you enter the
fort from the docks. This lands you across from the Deathfist Citadel. Go to the right to get to the bridge.
You want to go to the shore on the left of the bridge where you will see two tents. The bones are
in front of the two tents.