Fig. 6. Temporal–spatial shifts in tuuhiikaan. The top two scenes compare a 1959 air photo and 2006 Ikonos image. Below is a vector overlay presented at double the scale of digitized tree and shrub lines used as proxies for shoreline movement because tidal variation between the two scenes cannot be controlled for (Grey 1983). The overlay shows the rapid rate of shoreline movement. The south-eastern tuuhiikan was cut in the 1960s or 1970s. Landscape change rendered the area poor for hunting, so four new tuuhiikaan were cut to the north-west, on the point, in the 1980s. The 1959 air photo was scanned at 6000 dpi and georeferenced to the Ikonos image using boulders, buildings, and other stable features as pass points, with a total RMS error of 8.09276m in Arc GIS 9.2. Digitizing was done at a 1:5,000 scale. Fig. 6