ocr: 'Itis the last known kakapo booming site in the whole of mainland New Zealand. This shallow pit in the earth here is part of a track and bowl system. I'll explain what a track and bowl system actually iS in I a moment. All there is to see here ist the roughly dug shallow pit in the ground. It's untidy and a little overgrown. Looking round again at the breathtaking landscape spread out around us Ifeel bewildered.