River of Echoes
Connecting Campogrotta on the Cristallo River in Tilea to Kreutzhofen on the Söll in The Empire. Over 300 miles long and 12ft deep probably throughout its length and wide enough that 2 8ft wide barges could overtake each other. About 150 miles into the cave system, is the village of Alimento: located in a "majestic vault two miles across. Luminous fungi bathed the place in a permanent twilight..." "The chamber seemed to be a vast spring, from which water flowed sedately through tunnels to north and south. The ruins of buildings were found, which scholars later confirmed were of ancient dwarven construction - the Dwarfs had also adapted the natural tunnels, making them smooth, easily navigable streams." Deaths Dark Shadow pp 7-8.