Our Pick
Posted on @rawstates
Old Faithful
1870
Yellowstone National Park, Wyoming
Dietmar Rabich · CC BY-SA 4.0 · Wikimedia Commons
Named by the first survey party for erupting on a schedule they could set a watch by. It is not the largest or most regular geyser in the park, but it is the most predictable of the big ones, every 60 to 110 minutes, and the interval has lengthened as earthquakes shift the plumbing.
That was 1 of the hidden places.
Location: documented spot
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