In 1925, a Yellowstone explosion reshaped Biscuit Basin; 101 years later, USGS found a sign mix-up

A captivating century-old enigma surrounds Yellowstone's Biscuit Basin, centering on the misplacement of Black Pearl Geyser. The confusion stemmed from a hydrothermal explosion in 1925, which not only reshaped the landscape but also displaced a key sign. Correspondence from 1926 highlighted the depth of this perplexity related to the geyser's position.