Origin: Maori (Māori) Mythology, New Zealand
Ohopa was one of the eleven taniwha sons of Araiteuru (Āraiteuru) of Hokianga Harbour.  Each of her eleven sons took a journey to see the country in which they lived, and each left his own mark on the harbor or surrounding country side. 
Ohopa happened to be a young, impatient taniwha, and he decided to travel north from his home, even thought there was quite a lot of rock to burrow through. He kept leaping up and out of the land to see more of it, but both his burrowing and his leaping failed to help him achieve his goal.  Ohopa finally became enraged and threw himself as high as he could, landing in the Panguru mountain range. Even so high up he could not see the country, and his anger continued to grow, until it became a deep hatred of every living thing.  Even to this day, he terrorizes the area.