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Even the elders in Pakistan's Sindh province admit they've never seen anything like it: whole trees encased in webs by millions of invading spiders.
Some cities die. The people leave, the streets go quiet, and the isolation takes on the macabre shape of a forlorn ghost-town - crumbling with haunting neglect and urban decay. From Taiwan to the foothills of the Sierra Nevada mountains, these abandoned cities lurk in the shadows of civilization.