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They tell us the Cheyenne Mountain Complex was carved into solid granite in just six years during the 1960s. Yet it functions as a fully self-sustaining underground city with 25-ton blast doors, independent air, water, and power, and zero public access to its deeper levels even today.

24,702 次观看 • 6 个月前 •via X (Twitter)

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250 years ago today, a new nation was born. This is how, a century and a half later, four hundred men carved its story into the side of a mountain... The monument is Mount Rushmore, in the Black Hills of South Dakota, and how it was made is even more astonishing than how it looks. The sculptor Gutzon Borglum began the work in 1927, choosing four presidents to represent the first 150 years of American history: Washington, Jefferson, Roosevelt, and Lincoln. The faces are each about 60 feet tall, roughly the height of a six-story building. I put together this video so you could see the men who actually built it. Look at them, dangling in leather harnesses over the edge of the cliff, hundreds of feet above the ground, drilling into solid granite. Around 90 percent of the mountain was carved away with dynamite, set by workers who learned to blast the rock to within inches of the finished surface. Then came the honeycombing: drilling dozens of small holes close together so the last layers of granite could be knocked away by hand and smoothed. In total, they removed some 450,000 tons of rock from the mountain. Many of these workers were miners who had come to the Black Hills chasing gold and found themselves carving a monument instead. The conditions were brutal, the heights were terrifying, and the work stopped again and again when the money ran out. It took fourteen years. And in all that time, blasting a mountainside with dynamite while hanging from ropes, not a single worker lost their life. On the country's 250th birthday, it is worth remembering that behind those four immortal faces are four hundred forgotten men who carved them out of a mountain...

James Lucas

57,822 次观看 • 27 天前