Sheshnag Lake (Urdu pronunciation: [ʃeːʃnɑːɡ] ; Kashmiri pronunciation: [ʃiːʃinaːɡ]) is an alpine high elevation oligotrophic lake[1] located in Anantnag district of Kashmir Valley in Jammu and Kashmir, India at an elevation of 3590 meters.

In ancient times, cloud bursts at the site caused a deep groove lined by mountains.

Those mountains are covered with snow and ice sheets which melt slowly so that water flows into the deep groove and forms a lake.

It was named Sheshnag because Sheshanaga (Śeṣanāga) is the nagaraja or King of all Nāgas and one of the primal beings of creation in Hinduism.

An hour's drive away from Srinagar city lies a fabled spring from a popular Kashmiri folk tale, “Himal and Nagrai”.