The last railroad to conquer the American West, the Milwaukee Road carved a bold path across Montana in 1909 — then electrified it, setting a world record. For 70 years it built towns, moved grain, and defied gravity. Then it was gone. Find out why.

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On Sept. 16, 1947, a military bomber vanished into a Montana blizzard with two men aboard. No wreckage. No signal. No answers — for ten months. What happened to Lt. Col. Sperry and Sgt. Glover over the Big Belt Mountains is one of the state’s most haunting aviation mysteries.

Web:
https://www.bigskytreasure.org/history/mysteries/national-guard-crash-1947

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Helena’s Cathedral of Saint Helena took 16 years to build, cost $645,000, and was largely funded by a penniless Irish immigrant who struck gold. Its Munich-crafted windows, Vienna-inspired twin spires, and survival of earthquakes and train wrecks make it one of Montana’s most extraordinary stories in stone.

Web:
https://www.bigskytreasure.org/history/institutions/cathedral-of-st-helena

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On this day in 1876 — Custer rode into history… and straight into a trap. Outnumbered, outmaneuvered, and out of time, 210 soldiers met their end on a Montana ridge. But who really won? Discover the battle that shook a nation and still sparks debate 150 years later.

Web:
https://www.bigskytreasure.org/history/events/battle-of-the-little-bighorn

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Sunday, June 21 was a great day to be at the Natural Bridge Picnic Area, South of Big Timber.

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Early on the morning of Saturday, June 13, 2026, a small hydrothermal explosion occurred at Biscuit Basin in Yellowstone National Park. Although smaller than the explosion that occurred in the same area in 2024, it emphasizes the dynamic and hazardous nature of hydrothermal activity in the region.

Web:
https://www.usgs.gov/observatories/yvo/news/oops-it-did-it-again-another-small-hydrothermal-explosion-biscuit-basin

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Oops, it did it again: Another small hydrothermal explosion at Biscuit Basin

Early on the morning of Saturday, June 13, 2026, a small hydrothermal explosion occurred at Biscuit Basin in Yellowstone National Park. Although smaller than the explosion that occurred in the same area in 2024, it emphasizes the dynamic and hazardous nature of hydrothermal activity in the region.

USGS

Coal built Colstrip in 1924. A railroad town, a company town, a boom town — and now a community staring down an uncertain future. A century of strip mines, power plants, and poisoned groundwater tells a story bigger than one Montana town. Read more.

Web:
https://www.bigskytreasure.org/history/places/colstrip

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He climbed the most fortified mountain in history. He died carrying a wounded comrade to safety. Louis Charlo, a Montana Salish Marine and great-great-grandson of the legendary Chief Charlo, helped open the path to Iwo Jima’s iconic flag raising — then vanished from history. Until now.

Web:
https://www.bigskytreasure.org/history/people/louis-charlo

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On this day in 1914, Butte’s own union men blew up their beloved Union Hall with the same dynamite they used to blast copper ore. One riot. One explosion. One city shattered. How did “the Gibraltar of Unionism” collapse from within? The answer will surprise you.

Web:
https://www.bigskytreasure.org/history/events/1914-butte-miners-union-hall-explosion

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Forget pirate chests—the real treasure hunt is buried under the Missouri river!
Between 1860 & 1890, the wild Missouri River swallowed dozens of steamboats loaded with whiskey, quartz mills, and millions in raw gold dust. Because the river shifted over time, these multi-million-dollar wrecks are now trapped underground. Intrigued?

Web:
https://www.bigskytreasure.org/history/mysteries/missouri-river-treasures

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