Seven Kingdoms: Seowyn's Crossing
The Feywash is the river that defines the border between Summerlund and Faerinwold. Further south, it defines the border between Tavanion and Dalenshire. It ultimate empties into the Sea of Sunken Fires near Gwyllan’s Watch over the dramatic waterfall called Lossonoria’s Tears. Although it is considered largely unnavigable due to its many waterfalls, many eladrin ships are able to travel the river via a series of crossings in the Feywild.