Kata Kolok

Kata Kolok (literally "deaf talk"), also known as Benkala Sign Language and Balinese Sign Language, is a village sign language which is indigenous to two neighbouring villages in northern Bali, Indonesia. The main village, Bengkala, has had high incidences of deafness for over 7 generations. Notwithstanding the biological time depth of the recessive mutation that causes deafness, the first substantial cohort of deaf signers did not occur until five generations ago, and this event marks the emergence of Kata Kolok (de Vos 2012).