Dudipatsar Lake, Lulusar; Dudipatsar National Park, Khyber Pakhtunkhwa. This lake lies in the extreme north of the Kaghan Valley, in Mansehra district. Dudipatsar means white mountain lake, a fitting name as the lake is surrounded by snowy peaks. It serves as the primary headwaters of the Kunhar River. Those who want to visit this beautiful gift of nature can visit the national park between June to September when the lake and park are accessible.