Sang Darka () is a mountainous village in Bala Khiyaban-e Litkuh Rural District of Emamzadeh Abdollah District in Amol County, Mazandaran province, Iran.
The village's people speak Mazandarani and Persian and are Shia Muslim.
At the time of the 2006 National Census, the village's population was below the reporting threshold, when it was in the Central District. The following census in 2011 counted 22 people in eight households, by which time the rural district had been separated from the district in the formation of Emamzadeh Abdollah District. The 2016 census measured the population of the village as nine people in five households.
Sang Darka used to be a malaria hotspot due to its temperate climate. The village has had no healthcare or education facilities except for a hammam. Its only agricultural activities are animal husbandry, and dairy and honey products.
It is famous for its waterfall which is inside the Hyrcanian forests. Sang Darka village and waterfall are in the forested northern slopes of the Alborz mountains. Its weather is hot and humid in summer and cool in winter, during which the waterfall may freeze.