Humpty Doo and the Coolabah Gully

In the second book, Jinx Valentine and her friends enjoy a holiday at Coolabah Gully while babysitting Mona the elephant, but their plans are disrupted when Mona begins to cause trouble and venture into the bush. As the children chase after Mona and become lost, they face the challenges of navigating the wilderness without supplies. Meanwhile, a significant and transformative event takes place beneath the Gully, resulting in lasting change for the children.