Before the Show: Yellowstone National Park, September 2003 During this visit most of Norris Geyser Basin was off limits due to an increase in temperature. Only the path from the visitor center to Echinus Geyser was open. This was our view of Echinus Geyser when we arrived. We had read somewhere that when the pool was full it signaled that an eruption was about to occur. Seeing that the pool was almost full, we decided to wait. And wait. And wait. Tomorrow I’ll post a photo of the show we got for our wait.