Tertön () is a term within Tibetan Buddhism meaning a person who is a discoverer of ancient hidden texts or terma. Many tertöns are considered to be incarnations of the twenty five main disciples of Padmasambhava (Guru Rinpoche), who foresaw a dark time in Tibet. He and his consort Yeshe Tsogyal hid teachings to be found in the future to benefit beings. A vast system of transmission lineages developed. Scriptures from the Nyingma school were updated by terma discoveries, and terma teachings have guided many Tibetan Bon and Buddhist practitioners. The Termas are sometimes objects like statues, and can also exist as dharma texts and experiences. Tertöns discover the texts at the right time and place. The teachings can be relatively simple transmissions as well as entire meditation systems. Termas are found in rocks, water and the minds of incarnations of Guru Rinpoche's students. Prominent Nyingma tertöns According to generally accepted history, the rediscovering of terma began with the first tertön, Sangye Lama (1000–1080). The Five Tertön Kings Throughout the centuries, many Nyingmapas were known as tertöns. Five of them were widely recognized as very important ones and called the "five tertön kings:" Nyangral Nyima Özer (1124–1192) Guru Chöwang (1212-1270), also known as Guru Chökyi Wangchuk Dorje Lingpa (1346–1405) Pema Lingpa (1445/50–1521) Jamyang Khyentse Wangpo (1820–1892) Female Tertöns Some influential female tertöns have all been considered to be emanations of Yeshe Tsogyal: Jomo Menmo (13th century), the consort of Guru Chöwang Mingyur Paldrön Sera Khandro (1892–1940) Other influential female tertöns include: Tāre Lhamo (1938–2003) Ayu Khandro (Long Life Dakini, 1839–1953) Other Nyingma tertöns Other important Nyingma tertöns include: Zhangtön Tashi Dorjé (1097–1167), reveled the Vima Nyingthig Rinchen Lingpa (1295–1375) Sangye Lingpa (1340–1396) Rigdzin Gödem (1307–1408), revealed the Northern Treasures Karma Lingpa (14th. century), revealed the Kar-gling zhi-khro, which includes the Bardo Thödrol Thangtong Gyalpo (1385–1510) Ratna Lingpa (1403–1471) Kunkyong Lingpa (1408–1489) Tennyi Lingpa Padma Tsewang Gyalpo (1480–1535) Lhatsün Namkha Jikmé (1597–c.1650) Jatsön Nyingpo (1585–1656), revealed the Könchok Chidü Namchö Mingyur Dorje (1645–1667), known for the Namchö (Sky Dharma) Terdak Lingpa (1646-1714) Jigme Lingpa (1729–1798), known for the Longchen Nyingthig Orgyen Chokgyur Lingpa (1829–1870) Dudjom Lingpa (1835–1904), revealed part of the Dudjom Tersar Dudjom Jigdral Yeshe Dorje (10 June 1904 – 17 January 1987), reincarnation of Dudjom Lingpa, revealed part of the Dudjom Tersar Jigme Phuntsok (1933 – 7 January 2004) In other Tibetan Buddhist schools The 15th Karmapa Khakyab Dorje