[Geysers] Inquiry about UNNG-MGG-2 ("Sentinel's Vents") in The Geyser of Yellowstone

[Barrett Southworth]

     Have there really only been two recorded episodes of it? I 
witnessed 15 eruptions of them on the 25th, Will Boekel also witness one 
or two, he has some shots of them, and i think i do as well.