Lhundrubteng is a Sakya monastery in Derge. It was founded in the fifteenth century by Jampa Puntsok on the site of earlier royal temples. Starting in the seventeenth century it enjoyed close ties with Ngor Monastery in Tsang, and is sometimes considered a branch of that monastery. The monastery includes the famous Derge Printing House. It is popularly known as Gonchen, although this term is also used for the entire city of Derge.