The Hildermoss River was a river located in the Republic of Siddarmark, running from the Hildermoss Mountains through to Spinefish Bay.  (MTAT)


The Hildermoss River began in the Hildermoss Mountains, and passed through Lake Isyk, and Lake Maysn, as it flowed north into Spinefish Bay.  Important towns along its shores included Five Forks.  Important canals that branched from it included the New Northland Canal, and the Guarnak-Sylmahn Canal.  Lastly it crossed four provinces, including Hildermoss, New Northland, Tarikah, and Icewind Province. (Map)