[The Big Picture] underground world (P2)

Caves and tunnels that are part of human life. In the past, our ancestors lived in caves, now we're digging to do a lot of different things. We dig to find ancient cultural values, to mine ... We used the cave to the permanent repository, to entertain, and effective shelter from natural disasters and caused by humans. And when the ground becomes more crowded and national borders closed, people were digging to build the system of movement and transportation of illegal goods. Here are some pictures taken below ground from around the world.      Galleria.loadTheme ('/ js / Tinhte / Galleria / themes / Azur / galleria.azur.min.js'); $ ("# Galleria_2008472164"). Galleria ({ imageCrop: false, maxScaleRatio: 1, preload: 3, fullscreenTransition: 'fade', });             Galleria.run ('# galleria_2008472164');     Source: The Atlantic ...