AustLit

'A group of teenagers are on a school wilderness camp at remote, and rugged, Clausen's Cove. They notice that there is a ring of stone fireplaces which seem to surround the camp behind a high, barbed-wire-topped fence. A local farmer warns them not to wander in the bush, beyond the ring of fireplaces at night, because there are hidden mine shafts and a pack of wild dogs roaming there. Sarah, who hates school camps, meets a local boy who tells her of a long-hidden murder and arranges to meet her at midnight, at a hut in the bush, to see the murder weapon, a sickle. At this fateful assignation, under a sickle moon, she realises too late the meaning of the fireplaces and the wild dogs...'
Source: Bookseller's website