Bau is a gold mining town, capital of Bau district in the Kuching Division of Sarawak, Malaysia. On 1 May 1837, the Skrang Ibans invaded the Ja…Bau is a gold mining town, capital of Bau district in the Kuching Division of Sarawak, Malaysia. On 1 May 1837, the Skrang Ibans invaded the Jagoi-Bratak Bidayuh settlement on top of Bratak Peak, killing over 2,000 Jagoi-Bratak Bidayuh men and taking 1,000 women captive. Panglima Kulow, head of Jagoi-Bratak Bidayuh community, and a handful of his followers survived the massacre. In 1841 James Brooke, who was then the newly installed White Rajah of Sarawak, was able to rescue some of the women taken captive. Each year on 1 May, descendants of the survivors of the 1837 massacre hold Jagoi-Bratak Day on top of Bratak Peak in Bau in memory of their ancestors. A memorial stone was erected on 1 May 1988, to mark the day.