The journeys in this picture book will keep the reader engaged throughout. Rainbow Class walks along a busy road to take an underground train to a farm. Meet alpacas and llamas, pigs and ponies... in this city farm surrounded by skyscrapers! True diversity in all its various forms. The journeys in this picture book will keep the reader engaged throughout. Rainbow Class walks along a busy road to take an underground train to a farm. Meet alpacas and llamas, pigs and ponies... in this city farm surrounded by skyscrapers! True diversity in all its various forms.