Located in owhango in the scenic Ruapehu district, Central Plateau, North island lies Marahua Blue. marahua Blue offers a quiet and peaceful, small farm atmosphere. Primary activities currently include Blueberry picking in the season of mid January to early March. Marahua Blue is not only an organic farm but also offers great accomodation. located in the small town of owhango(via Taumurunui) Marahua Blue is in close range of anything owhango has to offer.