NABSQNO 12T-430614-5190552
Gallatin Natural Bridge in Clark County, Montana
Photo by Jay Wilbur
NABSQNO 12T-430614-5190552. Gallatin Natural Bridge is a cave natural arch eroded through Madison limestone. It is located above the Missouri River in Clark County, Montana. The easiest way to view this natural arch is on the summer boat tours through the Gates of the Mountains. Vreeland listed this arch as number 19-33 in his catalog, and reported a span of 25 feet.
Gallatin Natural Bridge is named for Albert Gallatin, the Secretary of the Treasury during the Jefferson presidency. Explorers Louis and Clark also gave his name to one of the three tributaries that come together to form the Missouri River.
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