The study of the Kharosthi script was recently invigorated by the discovery of the Gandhāran Buddhist texts, a set of birch bark manuscripts written in Kharosthi, discovered near the Afghan city of Hadda just west of the Khyber Pass in Pakistan. The manuscripts were donated to the British Library in 1994. The entire set of manuscripts are dated to the 1st century CE, making them the oldest Buddhist manuscripts yet discovered.