Mt Richmond or Otahuhu, and McLennan Hills, volcanic scoria cones and Maori hillforts, in 1940 before McLennan Hills was quarried away. Otahuhu is named after Maori chief Tahuhu who founded a settlement there in the 14th century. The local scoria cones were used as defendable hillforts, had fertile soil for growing crops and were next to a canoe portage route across the narrowest part of the Auckland isthmus. Auckland, New Zealand. Aerial photos from retrolens.nz . This version uses a different set of aerial photos with clearer details. My 3D model generated with photogrammetry software 3DF Zephyr v4.351 processing 5 images