Geyser Watch

Sponge Geyser – this is about it most of the time over the past few years. It simply cycles between low and high water – ‘a cyclic geyser.’ When at high water, it boils – ‘a boiling eruption.’ When I took these two photos I had a gentleman ask me what it does and upon learning this was it, he was visibly disappointed. The size of the cone does suggest maybe it does something more.

But then when I walked up to Sponge Geyser this year, it was different. Still not big, but different, and those differences capture me. There’s a bench to sit on at Sponge Geyser, and I sat for an hour or so – it’s really a great spot to watch much of the action on Geyser Hill. This time, at high water it bubbled and overflowed. Then as the water level dropped, the boiling began AND water spurted out some side vents I had not seen before. Some eruptions spurted water out these back or side vents fairly high, while others just splashed up a few drops. There might be a pattern to it – or there might not be any pattern. But a change definitely happened.