Thousand Buddha Caves (Chinese: 柏孜克里克千佛洞; Uyghur: بزقلیق مىڭ ئۆيى )
The Bezeklik caves are a complex of Buddhist cave grottos dating from the 5th to 14th century between the cities of Turpan and Shanshan (Loulan) at the north-east of the Taklamakan Desert near the ancient ruins of Gaochang in the Mutou Valley, a gorge in the Flaming Mountains, in the Xinjiang region of western China. There are 77 rock-cut caves at the site. Most have rectangular spaces with round arch ceilings often divided into four sections, each with a mural of the Buddha.
Turfan fragments: https://en.wikipedia.org/wiki/Turpan#Turfan_fragments
40,000 manuscripts and manuscript fragments in 16 different languages and 26 different typefaces in different book forms. They are in the custody of the Berlin State Library - The approximately 8,000 Old Turkic Buddhist texts make up the largest part of this collection, but also includes:
Sogdian Buddhist scriptures were found in Turpan (and also in Dunhuang), but these date from the Tang dynasty (618–907)
Christian texts exist mainly in Syriac and Sogdian, but also as Syriac-Sogdian bilinguals (bilingual texts), as well as some Turkish-Nestorian fragments. They include fragments of Sogdian translations of works by Isaac the Syrian.
Manichaean texts survive in Middle Persian, Parthian, Sogdian and Uyghur; the Sogdian and Uyghur documents show a notable adaptation to Buddhism, but there is also evidence of a reverse influence.
Important parts of the Gospel of Mani were found here, for example. Also, parts of the Arzhang (Book of Pictures), one of the holy books of Manichaeism were discovered.
several Indian Sanskrit texts from various schools of Mahayana and Hinayana, Uyghur texts that are mostly translations from Sanskrit, Tocharian and, starting in the 9th century, increasingly from the Chinese.