Red
Yemen’s old walled city of Shibam is the oldest metropolis in the world to use vertical construction with mud (until 8 floors!).
The Batagaika crater is a thermokarst depression in the form of a one kilometre-long gash up to 100 metres deep, and growing, in the East Siberian taiga, in the Sakha Republic in Russia. The land began to sink due […]