11 Months Ago, latimesblogs.latimes.com says (in Putting the yellow in Yellowstone) Park employees were tipped off by someone watching a webcam who saw six employees making tracks for the fissure's edge. The geyser was not erupting at the time. Photo: Old Faithful geyser, Yellowstone National Park. Credit: National Park Service.
KTAK - Yellowstone Insider

And ABC2 News says (in Marking Their Territory)  MD
It's a natural wonder and two Yellowstone National Park employees decided to leave their mark on it. A live webcam caught two employees urinating into the Old Faithful Geyser! One employee was fined and banned from the park for two years. ...

And Tampabay.com says (in While geyser held it, they decided not to) 1 into the Old Faithful geyser at Yellowstone National Park in Wyoming. First, it's stupid. Second, there is a 24-hour Webcam. So when a couple of seasonal park employees strayed from the walking paths and into the geyser area, officials got real-time ...

And Yellowstone Insider says (in Two fired for Old Faithful defacement; one fined)  MN
He was also banned from Yellowstone National Park for two years. The case against the second employee is stil pending. As you'll recall, six concessionaire employees were cited by the National Park Service for trespassing on Old Faithful Geyser the ...