While Dibrugarh is an important station, I believe stations like NTSK, Kamakhya and Lumbding are equally important. Among the three Kamakhya has especially evolved into an important station for tourism. NTSK is important because of the ease of access to Arunachal, Digboi, Ledo(Digboi and Ledo important for oil and coal). Lumbding is important because it acts as a gateway to Silchar, Halflong etc. Also, Mariani can be stated as an honorable mention.