Below, rows of long, narrow fields extended from Culebra Creek toward a man-made channel, the main artery of the valley’s centuries-old “acequia” irrigation system. This was the “People’s Ditch,” a ...

Throughout history, several ancient civilizations have built impeccable infrastructure, including detailed canal systems and ...

Anuradhapura is one of the ancient capitals of Sri Lanka, famous for its well preserved ruins ... The city also had some of the most complex irrigation systems of the ancient world. The administration ...