Galéria: Kuoliang-alagút: egy hegyoldalba vájtak egy 1200 méteres járatot az ott élők
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Aerial view of the Guoliang Tunnel through the Wanxian Mountain in the Taihang Mountains in Huixian county, Xinxiang city, central China's Henan province, 9 November 2017.
A road winds through a cliff in Xinxiang, Henan Province. The 1300-meter-long tunnel road, which is five meters high and four meters wide, was dug by 13 villagers from 1972 to 1977 with only hammers and steel files. (Photo by Hou jianxun / Imaginechina / Imaginechina via AFP)