Tucked away in the frigid northern corner of Siberia are giant craters, some deep enough to fit a 15-story building. Scientists observed the first crater in 2014 and have found about 20 more in ...

which is now hailed as "the largest ghost town" in Siberia. Nowadays, the people left walking Kadykchan's streets are tourists eager for an apocalyptic travel experience. The empty shells of ...