Cinnamon Spouter & Cinnamon West - Black Sand Basin YNP - October 14, 2018

From "The Geysers of Yellowstone," by T. Scott Bryan:
'“Cinnamon Spouter” was first noted as a “sizzling fracture” in 1933. Nothing more was seen of it until 1988, when it began to spray from a small opening. By April 1989, it had developed a pool that acted as a geyser/ spouter directly underneath the boardwalk. . . The spring gradually developed an ever-larger crater stained with a cinnamon-red deposit. Some splashes reach up to 6 feet high.
'“Cinnamon West,” . . . [which] formed during the winter of 1998- 1999 . . . a few feet southwest of “Cinnamon Spouter,”. . . has become an important geyser. . . . During active phases, eruption intervals of 4 to 5 minutes produce durations of about 1 ½ minutes, and some bursts reach as high as 8 feet. Pauses of complete quiet also take place during the quiet intervals of “Cinnamon Spouter.”'