It can be divided into further sub-zones: (1) the Faridpur Trough; (2) the Barisal High; (3) the Hatiya Trough; (4) the Sylhet Trough; and (5) the Madhupur High.
Many local and passenger trains connect Sitarampur with Dhanbad, Gomoh, Chittaranjan, Asansol and Bardhaman and to Madhupur & Deoghar in Deoghar district of Jharkhand and various other parts of Jharkhand and Bihar.
His last years were spent at Madhupur in Bihar, where according to tradition, Hariharananda entered an artificial cave at Kapil Math on May 14, 1926 and remained there in study and meditation for last twenty-one years of his life.
Madhupur tract a large upland area of 4,244 km² in north central of Bangladesh, stretching from east of Jamalpur in the north, to Fatullah and Narayanganj, in the south.