The Age of Worms
River of Blood
First referenced by the Vaati voices who chastised Riddle for straying from his appointed task, the party saw what they believed to be the actual River itself, coursing along behind a door in Icosiol’s tomb.
The River was covered by a decrepit stone bridge that led to a gate house covered in clockwork imagery (see Marut Inevitable), but the party did not attempt to cross the River to investigate further.
The party believes this is the river referenced in the title of a mysterious figure called the Marquis of the River.