=== Arabian Peninsula ======= Oman ====In Oman from the Iron Age Period (found in Salut, Bat and other sites) a system of underground aqueducts called Falaj were constructed, a series of well-like vertical shafts, connected by gently sloping horizontal tunnels.
Ostanke "karezes" najdemo v različnih delih okrožja in jih pripisujejo Arabcem.