The satellite image shows the course of the river, from its source at the eastern shore of Lago Argentino, to its mouth on the Atlantic coast of Argentina, a straight-line distance of about 162 miles/261 kilometers. Each camera icon displays a close-up image of some detail along the course of the river.
The “Western Station” is the western-most point reached on May 4 by Captain Robert FitzRoy, Charles Darwin, and members of HMS Beagle's crew on their exploration of the river, April 18 - May 8, 1834. This and other points marked by yellow circles are taken from the “Appendix” volume of FitzRoy's Narrative ….
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