🇹🇲 Turkmenistan · Hydraulic works
Sultan Kala Dam Merv Oasis
Seljuk 11th c. (Sultan Sanjar) with Abbasid foundation · Seljuk Islamic (Merv oasis)
Sultan Kala – Medieval Merv oasis headworks on Murghab: 12m Sultan Dam (Murghab bifurcation barrage), Razik canal, Majan canal lattice and 55 km Abdullah canal irrigating 2,500 km² oasis supporting…