In the upper reaches of Oman’s Jebel Akhdar mountains I came across this tiny cascade of water. The groove running left to right is a small man made channel a few centimetres wide in which the trickle is collected in .
Then in a small fountain/waterfall (bottom right of the image) it drops into a collecting pool which feeds into a Falaj. For some 200 people in a small hamlet this is their agricultural water supply. Its drinking water is another similar sized source – topped up with occasional deliveries from the valley 1500ft below.