An affectionate picture of Australia's aboriginal people on a traditional outing. Adams, an award-winning author-illustrator who lived for years in an aboriginal community, describes a weekend at ``Thuukal'' on the Love River, ``Grandad's country.'' Grandad isn't coming, but he warns of particular dangers— quicksand, and ``the story place of Yaatamay, the Carpet Snake.'' The extended family travels by boat; the children share in the fishing, oyster gathering, and cooking, and enjoy swimming and the local wildlife. They also hear a frightening noise like thunder—Yaatamay? Adam's art, layered, evanescent earth tones outlined in white, is richly evocative and truly lovely. An authentic glimpse of a culture and setting unfamiliar to most young Americans. To include a glossary. (Picture book. 5-10)