Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over one hundred lives. Originally known as Boulder Dam from 1933, it was officially renamed Hoover Dam for President Herbert Hoover by a joint resolution of Congress in 1947.
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Pepperboxdesign
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標準授權 | XS | 480 x 318 | JPG | 13 | |
標準授權 | S | 800 x 530 | JPG | 15 | |
標準授權 | M | 2128 x 1409 | JPG | 18 | |
標準授權 | L | 2747 x 1819 | JPG | 20 | |
標準授權 | XL | 3475 x 2301 | JPG | 22 | |
標準授權 | MAX | 4928 x 3264 | JPG | 23 | |
標準授權 | TIFF | 6969 x 4616 | TIF | 39 | |
進階授權 | WEL | 4928 x 3264 | JPG | 88 | |
進階授權 | PEL | 4928 x 3264 | JPG | 88 | |
進階授權 | UEL | 4928 x 3264 | JPG | 88 |
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標準授權 | 480 x 318 px | JPG | 13 點 |
標準授權 | 800 x 530 px | JPG | 15 點 |
標準授權 | 2128 x 1409 px | JPG | 18 點 |
標準授權 | 2747 x 1819 px | JPG | 20 點 |
標準授權 | 3475 x 2301 px | JPG | 22 點 |
標準授權 | 4928 x 3264 px | JPG | 23 點 |
標準授權 | 6969 x 4616 px | TIF | 39 點 |
進階授權 | 4928 x 3264 px | JPG | 88 點 |
進階授權 | 4928 x 3264 px | JPG | 88 點 |
進階授權 | 4928 x 3264 px | JPG | 88 點 |