The EDZ is a warren of Lost Sectors, stacking secrets on top of each other and generally making specific ones awkward for newer players to find. In this guide, we will show you where to find Skydock IV for the Challenger’s Proving IV quest. You’ll need to visit, and completely clear, this Lost Sector for one step in the challenge.
It is filled with Cabal enemies, and none of them should prove to be a serious threat to you, especially as those big domes make for easy headshots.
The first thing to do is spawn on the EDZ at the Sunken Isles. Get on your sparrow and aim directly at the huge Cabal ship that has decided to park itself in front of you.
Make for the mid point of the ship, and you will find a tunnel running directly underneath that the Cabal are using as an entrance to the Lost Sector.
Halfway through the tunnel, jump off the Sparrow and up onto the raised platform, then go through the door in front of you.
Follow the tunnels, there is only one route, and you will eventually reach the Skydock IV Lost Sector.
This place is teeming with Cabal, and remember that you need to take out the Lost Sector boss and open the cache to fully complete the area. This applies even for the Challenger’s Proving IV quest, as there is an item in the cache that you need to bring back to the Crow.