Fan Geyser — Attraction in West Yellowstone

We need 6 stars for this. Fan and Mortar, the most amazing geyser to see in all of Yellowstone. It is rare to see this geyser, but if you do, you will never forget it. To trigger a Fan and Mortar eruption, you need a lot of stuff. Next to Fan are 4 vents: River(which you can't see), High(The furthest left cone of the three, if High is erupting, River is erupting.), Gold(The second hole to the right of High, and Angle(the furthest right hole.) If all of these are erupting, there is a chance. There are two holes in Mortar, look for spashing in Lower Mortar and any water in Upper Mortar. If High reaches 10 feet and water is coming out of upper Mortar, there is a lock on the geyser and it is guaranteed to erupt. Suddenly the entire platform explodes into eruption, with Fan being shaped like an old Japanese fan. Fan reaches a hight of 50 feet and Mortar reaches 20 feet. Fan shoots water so far out of it's rift that it covers the boardwalk and even shoots water over the boardwalk. By far the most amazing...

Fan Geyser was the most impressive geyser we had seen on our entire Yellowstone trip! We stumbled onto it, actually, after visiting the Morning Glory Pools. Even though it is not as faithful as old faithful, in my humble opinion it is just as impressive! If you are patient or have time to wait, Fan Geyser is definitely a must see...

Fan and Mortar Geysers together include numerous vents, so during an eruption there is a lot of activity. Always a great show, though I have not seen either of these geysers erupt during my visits the...