How expensive would it be to build a mountain? Like not a fancy pyramid, just a giant pile of stone and dirt
are you building it with ground-based tools or are helicopters allowed?
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whichever one's cheaper
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panama canal cost 375,000,000 in 1914 2019 dollars = ~ $10 billion 120,000,000 m^3 of dirt = 1 km square x 120 m tall
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also since dams apparently contribute to earthquakes I bet a fresh mountain super would it would be awesome
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