Trolly line is located in the Jaldapara National Park. It is situated in the foothills of the Himalayas and the best tourist attraction point in Dooars region. The river Torsha flows through this rain forest sanctuary which is mostly covered with tall grasses, the sanctuary encompasses abundant vegetation and a rich variety of wildlife. The main attraction of the sanctuary is Asiatic one-horned rhinoceros. The sanctuary holds the highest rhino population in India .The other animals found are tigers, elephants, deers, sambhar, barking deer, spotted deer, hog deer, wild pig and bisons. Jaldapara is a paradise for bird watchers various birds are found here like the crested eagle, Pallas's fishing eagle and shikra, besides jungle fowl, peafowl, partridges, and lesser pied hornbill. Python, monitor lizards, krates, cobras, geckos and much more. Trolly line is also one of the main tourist attraction points in Jaldapara National Park where herds of elephant can be seen crossing rivers, stream out there.