Miss Alone
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Building the world’s highest altitude railway on permafrost does not seem an easy task to accomplish by any means. However, Chinese engineers managed to building a 1,200-mile railroad passing through Himalayan peaks, and reaching the highest point at the 16,640-foot Tanggula pass. The greatest challenge was to get through the permafrost, and the engineers decided to elevate the tracks to allow cool air to pass between the fast-moving, heat-generating trains and the ground; and support the elevated rail with columns mounted deep enough to hit cooler, more stable earth.
