The Batak live in northern Sumatra. Their priests (datu) traditionally had a powerful role. An essential ritual object they used was the bark divination book (pustaha). They use a script that is related to Southern Brahmi of India and ancient Javanese writing systems. The text runs parallel to the folds in the bark and is read horizontally from left to right. The book also contains black and red drawings. The texts deal with divination, magic, and medicine. Measures 3 x 2”. 14 leafs total written on both sides in black and red. Bark covers. Very unique.