Explanation

The Sukkur Barrage is the largest in Pakistan.

It Is the pride of Pakistan's Irrigation system and in the whole world.

Additional information:

Sukkur Barrage is a barrage on the River Indus 

The barrage was built during the British Raj

Build from 1923 to 1932 

Its old name was named Lloyd Barrage.

It is located in Sindh Province