Opal Terrace Photos

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Opal Spring flows from the base of Capitol Hill, which is across the road from Liberty Cap. After years of dormancy, this spring became active in 1926 and began depositing up to one foot (0.3m) of travertine per year. In 1947, a tennis court was removed to allow natural expansion of the terrace.
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Opal Terrace - Yellowstone - USA