During the late middle ages two separate groups sought to recover a valuable jewel from an abandoned dwarven mine. They were trapped in the depths, forced to wander in the darkness. Eventually they discovered a great underground river, one that stretched all the way from Tiandao (Tee-Ann-Da-ow) to Skaivu (Sky-view) with numerous offshoots and tributaries. The two groups realized the fortune they had discovered, that they could monopolize trade and avoid the Ulan (Oo-Lawn) of the great plains entirely.
The River Delvers began to come together and establish themselves as an organization. They fight underground enemies to secure their river route, making treaties and trade deals with the underground nations and the cities above. They employ miners to expand the river and improve their ability to travel it and build outposts in the underground. The other great effort of the Delver’s workers and soldiers is keeping their trade ports secure.
The current leader of the delvers is a drow, Sadiir Arabrahel, who frequently travels the river passages to supervise the operation of the route and its ships. There are numerous managers who oversee the ships and goods.