Mackenzie River expedition

The Mackenzie River expedition of 1825–1827 was the second of three Arctic expeditions led by explorer John Franklin and organized by the Royal Navy. Its goal was the exploration of the North American coast between the mouths of the Mackenzie and Coppermine rivers and Bering Strait, in what is now present-day Alaska, Yukon, the Northwest Territories, and Nunavut. Franklin was accompanied by George Back and John Richardson, both of whom he had previously collaborated with in the disastrous Coppermine expedition of 1819–1821. Unlike Franklin's previous expedition, this one was largely successful, and resulted in the mapping of more than 1,000 km (620 mi) of new coastline^[1] between the Coppermine River and Prudhoe Bay, Alaska, an area that until then had remained largely unexplored by Europeans.^[2]