plawolf
Lieutenant General
I've been to several Tulou a few years ago on a tour and if there were silos that are that size they would be housing Saturn V sized ICBMs. You could nuke Mars with a launch vehicle that size. Did CIA really make that mistake?
It is a widely referenced story. I am sure I saw a segment on it on TV somewhere, but struggling to remember precisely when and where.
But satellite imagery tech were primitive back then, and resolution would have been poor. And once they did decide those were missile silos, they would have scaled other nearly features accordingly and probably just assumed locals were building really small houses or something.
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One anecdote is that the U.S. once mistook the odd-looking tulou houses for missile launch silos when viewing satellite images during the 1960s. Unable to figure out what the 1,500 mysterious constructions really were, CIA sent two agents disguised as a tourist couple in 1985, and finally found they were actually ancient residential buildings.