Within the cavern that Caridin is located, there is a large statue of a stone golem holding a tablet. It lists the names of many dwarves who were turned into golems. Examine it, take a copy of the names, and return it to the Shaper Czibor who is located in the Orzammar Shaperate.
Note: Both Oghren and Shale can be asked about the registry.
If you inform Shaper Czibor that you're heading to the Deep Roads he will ask the Warden to keep an eye out for ancient treasures or manuscripts as the Shaperate is interested in them and will pay a good price to get them back. This is a reference to this quest.