Nice! I had been looking at the Hollow Earth D&D resources before picking up Ghosts of Salt Marsh, and my players
may eventually discover they are on the Warden.
But @Douglas Cole, I thought the canonical setting for DF, and thus Norlond, was Yrth? Or did I just imagine that DF has anything to do with Yrth? (Not that the GM can’t do whatever they want.)