Tonglu is one of the highest peaks of the Singalila Ridge near the India-Nepal border. It is a roadside halt from Manebhanjan to Sandakphu.
Sandakphu is very cold even in summers hence woolen clothes are highly preferable. In winter take heavy woolen clothes and of course, wear woolen inners. Weather can be very unpredictable so be ready for all the circumstances. The Best time to visit Sandakphu i.e. April to May (temp. stays between 6-12 degrees) and between October-November (temp. stays between 1-6 degree) recently the Sandakphu trek is also taking place in winters during December - February. From mid of June to mid of September the Singalila National Park remains closed as this is the monsoon and the animals breeding season thus trekking cannot be done at this time.
carry a sufficient amount of drinking water as water is priced at a very high rate once you reach Sandakphu a proper first aid box, Extra pair of socks, sufficient woolens, and an umbrella. Dry foods to eat. There is no electricity in most of the places so it is advised to carry your emergency lights and torches operated through a battery. Carry extra cell (battery)and Carry a trekking stick.
Cost and expenditure of the trek:-
A permit fee of Rs. 100, and Rs 200 per person per day for Indian tourists and foreigners respectively need to be paid at the entry of Singalila National Park. Cost of food along the trekking route will be around Rs. 500-600 per person per day The rate of dormitory beds in trekker hut is Rs. 150-250 per person per day A good room at a private hotel can cost up to Rs. 1500-2500 per night. Cheaper ones are also available Njp/Bagdogra to Manebhanjan car rent Rs. 3000 Njp/Bagdogra to Sandakphu land rover Rs. 3500-4000 The rate for guide is Rs 1000 per day for Indians up to 7 persons, thereafter Rs 150 additional per person. For foreigner Rs 1200 per day for a group up to seven, an additional Rs 300 per person. The rate for the porter is Rs 800+ 200 (variable) for food at Sandakphu and Phalut each.
Sandakphu Trekking Map