Ground Truth Trekking

Two Erratics

Andrew Mattox affixes a 'control point' atop of a glacial erratic in Icy Bay, Alaska. The control points, in this instance, were five gallon bucket lids with targets painted on them. The targets are useful for aerial surveys of Taan Fjord, which experienced a massive landslide and tsunami, in October 2015.

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Creative Commons Attribution

© Bjørn