The Joyful Grove of Immortal Accomplishment
From Rigpa Wiki
The Joyful Grove of Immortal Accomplishment (Wyl. 'chi med grub pa'i dga' tshal) - the empowerment room of Jamyang Khyentse Wangpo at Dzongsar Monastery. It is said to have been so sacred that anyone who entered it would never again be reborn in the lower realms. It was destroyed during the cultural revolution.