 Atisha's hermitage is in ruins but had 300 monks in the 19th century and was the summer quarters for the Ramoche Monastery (the Upper Tantric College).Later histories record that both Songtsen Gampo and Trisong Detsen (756–797) founded temples at Yerpa, and Klu-mes Tshul-khrims did some refurbishing in the 11th century.Tradition says that after Songtsen Gampo's only son, Gungri Gungsten, was born to Mangza Tricham, Princess of Mang, one of his wives