Exegesis
In 1684, at the age of 61 years, he stumbled upon the hidden location of Rudam, a sacred valley at which Guru Padmasambhava visited and blessed with his presence. In coordination with his three main disciples, there in the valley he established the monastery of Dzogchen Rudam Orgyen Samten Chöling, known as the Dzogchen Monastery which today lies in Sichuan province in China.
Read more about this topic: Pema Rigdzin, 1st Dzogchen Rinpoche