Aside of an expedition that Varric took them and another person that I can't exactly remember that ended up rising them from living in Lowtown to Hightown in their current estate, I can't exactly say that I am sure visiting the Deep Roads is what they do a lot on their adventures. Still, there isn't a dull moment when the Champion decides to get involved.

[Well, that wave looks like its the last one for now, so he's going to be placing his bow away for now. And wow, he still can't really comprehend on how dwarves can live underground-- and even harder to comprehend if someone like Varric is doing the living part.]

If I may ask, what business does the Wardens have coming down to this part of the Roads? Not that I ever mind giving a helping hand in clearing out Darkspawn and the like, but there is something here that you are looking for, correct?