S.S. Center MAP HOUSE in Thapathali in Kathmandu carries the HMG/Finnida map series that cover entire Nepal in 1:50.000 . Two sheets cover the Langtang valley trekking areas. These are the most accurate and best maps. However, there are other maps that carry more information for trekkers on them.
Cost of maps 150 Rs each.
Camping/Beach/Outdoor Gear: Make sure you bring a very good, warm sleeping bag if you are rambling around these heights during winter. On one trip here in early December we had night temperatures down to about -15 C, and certyainly no more than + 2-3 C during the days.
Luggage and bags:
An easy-to-carry backpack, sturdy anought to be handled on the bus.
Clothing/Shoes/Weather Gear: Hiking boots above Laurebina Yak.
Toiletries and Medical Supplies: Sun screen, things against colds
Photo Equipment: Very strong light uphigh, my automatic camera settings were fooled by the intense light and underexposure was the issue.
Camping/Beach/Outdoor Gear: Mountain parka, the best maps, extra food for emergencies, warm sleeping bag, sleeping mattress
Miscellaneous: Snow gear:
gaiters, sufficiently heavy boots, crampons, ice ax, good pants and parka.