KIDRON VALLEY AND THE WASHING OF THE BLOOD OF THE SACRIFICE

Kidron means dark red.  Named after the blood that used to flow from the temple sacrifices:



Jesus, having just completed the atonement, washed his face in the brook just as he was being betrayed by Judas:

https://www.churchofjesuschrist.org/media-library/video/2011-10-015-the-savior-suffers-in-gethsemane?lang=eng

Folks, all things follow a pattern.