At an altitude of 1500ft and 99km away from Siliguri a river valley along Jaldhaka River has become a prospective tourist destination of Dooars. Jaldhaka is a river that originates at East Sikkim and passes through Bhutan and partly through Bhutan-Bengal border. At Dooars, it meets river Jiti near Jiti Tea garden.The river valley is located under Kalimpong sub-division and is cut off from the rest of the Darjeeling district by a mountain ridge descending south-east from Reche-la of Neora Valley National Park and is separated from Bhutan by the Jaldhaka River.

Situated near the Indo-Bhutan border in the state of West Bengal, Jaldhaka is known for its scenic beauty and for the astounding nearby places attracting people interested in nature vacation with the activities like trekking and hiking. Jhallong is one of the lesser known hill stations and offer beautiful landscape and peace. It is known for cardamom plantation. It is situated on the bank of Jaldhaka on the way to Bindu in Kalimpong Sub-division. This place is home for many hill birds and it is called the paradise of bird watchers.