Mount Ruapehu is a cone volcano, situated at the southern end of the Taupo Volcanic zone[?]. Ruapehu is frequently active, and is one of the largest active volcanoes in New Zealand.
... the largest river in the world by volume, the Parana[?] with its impressive Iguaçu[?] falls, the Rio Negro, São Francisco[?], Xingu, Madeira and the Tapajós[?] ...