Thangkas are Buddhist paintings on fabric made of gold and other natural colors, depicting Buddhist deities, scenes or mandalas.
https://en.wikipedia.org/wiki/Thangka
Ralang Monastery was built by the 12th Gyaltsab Rinpoche, old monastery underwent reconstruction in 1975-1981 and in 1995.
Ref:
https://en.wikipedia.org/wiki/Thangka Kapadia, Harish. Ralang Monastery: An Architectural Survey. New Delhi: IGNCA, 1998.
Martin, Dan. Ralang Monastery: A History. Sikkim: Palchen Choeling Monastic Institute, 2012.
Ralang Monastery has an extensive collection of paintings and thangka
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