Primitive GPS

Boaters who spent time cruising around British Columbia might have spotted rocks that have been formed into a cairn — a human-made pile or stack of rocks. These cairns, or inukshuks, were erected by the native peoples as landmarks for travel routes, to mark food caches and as points of reference. Cairns are known to have been used by the native peoples of the Arctic region of North America, from Alaska to Greenland.


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