Nanda Devi Group of Glaciers consists of a number of well-developed glaciers of large size and length. Nanda Devi North and Nanda Devi South are two important glaciers located in the Rishi Ganga River
catchment. Each of these is 19 km-long and originate on the southern slope of Nanda Devi peak
(7,108 m). Other important glaciers of this group are Trishul
, Kurumtoli, Nandakna, Bartoli and Ramani. The melted-water streams originating from these glaciers form the Rishi Ganga River.
The glaciers are approachable from Joshimath
, on the way to Malari Road. From mid-April to May-June and from September to November are the favorable months for tourists to trek to these glaciers.