There is 1 Dead Ghost to be found in Waking Ruins. They can be collected on any mission or during a patrol. Each Ghost can only be collected once per account.
Ghost 1[edit]
When you make it into the Waking Ruins. You will want to find the High point of the area:
There are a few ways up. Some of them involve a lot of Vex.
Head over to the right of it and look for the pillar that is next to a tree and a small pond. Just jump that and then jump across the gap to the landing.
Once you make it up the first landing, you just have some simple jumping. Just quick do that:
After that it is just a quick walk over to the Dead Ghost:
