WOMBAT GOES WALKABOUT - Harper Collins

Wombat loves to dig. One day he digs the deepest hole he's ever dug and crawls into the cool darkness to think. But when he climbs out a little later, he can't find his mother. He is all alone. As Wombat wanders through the Bush looking for her, he meets all kinds of creatures: Kookaburra, Wallaby, Possum, Emu, Boy and Koala. None of them thinks very much of Wombat and his digging- until danger threatens and he comes up with a brilliant idea.