These falls are located near Gargar River in a region called Sika. Around these falls, there have been water mills dating back to Sassanid dynasty– centuries. The Sika Water Mills are one of the most notable attractions of the province. The mills consist of an area with small rooms and narrow corridors, alongside which streams of water canals. It has outlets to the Gargar River. In these mills, the high pressure of water streams from up to down, moves the wheels for grinding the wheat. In summers, a pleasant drizzling wind blowing in the Sika rooms which creates a cool recreational place for people of Shushtar. The mills had great economic importance in the ancient times. These mills are indeed a masterpiece of engineering design in ancient Iran.