Named after the constant cool breeze that blows throughout the cavern. Take the chance to observe the many swiftlets and bats that dwell within this large cave while you relax besides a subterranean stream that runs through the cave.History-wise, Bau had witnessed many conflicts. On May 1, 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.Each year on May 1, descendants of the survivors of the massacre will hold Jagoi-Bratak Day on top of Bratak Peak in memory of their ancestors. A memorial stone was erected on May 1, 1988, to mark the day.Another major conflict happened during the 1857 Gold Miners’ Rebellion. The rebels, pursued by the White Rajah’s forces, retreat to a cave here, where a few hundred were burnt or suffocated to death.