The Founding Inscription in the gSer khang of Lalung (Spiti, Himachal Pradesh), by Kurt Tropper

Field work of Kurt Troper in 2001-2002 and in the context of the interdisciplinary research projects "The Cultural History of the Western Himalayas from the 10th to the 14th centuries (2007-2009)
The temple itself seems  to have been built in the second half of the 12th century.