The Tosar Lake in North District was proposed by the Mangan Tourism Development Committee (M.T.D.C) for development of Tourism in North Sikkim. Mangan Tourism Development Committee is a registered body (N.G.O) formed to develop Eco-Tourism in the North District as per the policy of the State Government. A recce to the Tosar lake area was jointly conducted by the representative of the TOURISM Department & Forest, Environment and Wildlife management Department, Government of Sikkim on the request of Mangan Tourism Development Committee from 19th to 25th of july 2006. The report of the recce team with the proposed route for trekking to Tosar lake and photographs of its surrounding areas with map was submitted to the Department for an official recognition of the proposed trek as requested by the M.T.D.C. As per the direction of the department, Mangan Tourism Development Committee has submitted Environment Management Plan which is enclosed here with for reference.