I've left hints of ruins and possible 'dungeon locations' in some of the threads, particuarly the 'ancient kingdoms' thread which I've failed to link, the Paravail thread which I have (c'mon, the city is sinking and rebuilt over itself constantly... what could possibly be down there?), and the Tenebria thread (notably the City of Palaces, built on top of not one but TWO ancient lost cities...).
In keeping with my general bit I've also kept things essentially systemless, so any monster threads must be limited by nature. I have dealt briefly with dragons, lizardmen and goblins, however... not to meantion the Daeylyraeth...
But I'll see what my brain can sort out.