The rock-hewn and brick-and-mortared Tawila Cisterns in the Crater district of the port of Aden, Yemen, have provided fresh water to the city for some 2000 years, steep mountain slopes rising up aroun
The rock-hewn and brick-and-mortared Tawila Cisterns in the Crater district of the port of Aden, Yemen, have provided fresh water to the city for some 2000 years, steep mountain slopes rising up around them, beneath a pale blue sky.