Companions of the Lake
The Lost River
Tales are told amongst the Elves and Woodmen of a river that once ran through the Heart of Mirkwood, allowing safe (well, safer) passage from the Halls of the Elven King to the Black Tarn and the lands of the Woodman.
Knowledge of the River and its whereabouts had almost disappeared when the Companions of the Lake, seeking a route through the Forest, now the dam that has been built to block its passage south has been found and there is a glimmer of hope that the River might be re-opened as a thoroughfare.
The great dilemma facing any who wish to re-open this passage is that it lies in the Heart of the Forest and the Great Spiders are not keen on visitors.