coober pedy

10 incredible underground cities in the world
Stories about people living in mines, caves or abandoned tunnels are not strange stories.
Due to the 'laying' of the tree, the company in Australia carries the leaves for analysis
The CEO of Marmota, David Wills, said the upcoming tests will help detect gold mines deep in the ground easier than conventional soil samples.
Cu Chi Tunnels top the world's most implicit underground destination
The interlocking tunnel system of more than 320 km long, full of works serving the life of the war in South Vietnam, shocked the international tourists.