Most of the fast locals coming from Kalyan or from Mumbai C.S.T. bypass through the Parsik Tunnel which is 1.3 km in length and it was once the third largest tunnel of Asia. This tunnel lies on the fast track and has one entry and one exit point in Mumbra. It is the first railway tunnel that was built in India and is more than hundred years old, by the British Empire. It is in the Sahyadri Ranges of Maharashtra and those hills are known as Parsik Hills.