Kawa sano Okami Jikan

Name
The River of the Hour of the Wolf was named for a battle between the Scorpion and the Lion in Beiden Pass where ten thousand samurai died, in the hour of the wolf, just after sunset. The battle was so horrific that the hour of the wolf was deemed ill-omened and the name of the hour was changed to the hour of the dog.

Location
The river is located on the border between the Crane, Scorpion and Lion.

Major References

 * Legend of the Five Rings; Third Edition Page 305.