Bara Bhangal is a strenuous, long and grossly undulating trek throughout its extant except for maybe the last 20kms (5hrs) and the difficulties are compounded further during the time of monsoons whence not only continual rains but constant whiteouts create unfathomable difficulties.
The trek is open for utmost four months during any year from late June to mid October (depending on snowfall) and for alpinists wishing to start from Manali, a careful analysis of the route is required since it requires crossing three ridges before the first pass (Kali hind pass). This creates difficulties of its own since routes marked on Survey of India are grossly wrong and should not be adhered to at face value.
The undulation and desolation of the valleys make it mandatory to carry the entire logistics all along since Bara Bhangal, being the only village enroute, is quite distant from Manali. So if you are diehard alpinist and wish to travel without porters and ponies (like we did), be prepared to carry atleast 25-30kg of rucksack.
Exploring The Unexplored 