Adari is built over several great natural cisterns. It was one of the reasons that the trade centre was set up there. A benevolent water spirit resides within the dark waters, revered by Trolls and Humans alike. Some say it was a product of a Dehori spirit and a local water Nymph, others via the magical meddling of Pavis' father.
I think here are many madmen here, drawn by the magics of days gone by. Fallen shamans, Tada dreamers, Darkness seekers and Mushroom eaters.
Perhaps the Issaries Temple has a local hero cult, which deals with Elves and Trolls.