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Photo Saturday: The Marble Caves

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 Yup. Missed that "Friday" thing once again! Back to Patagonia... Moving on from Patagonia National Park, we drove north up the Carretera Austral to Puerto Rio Tranquillo, where the Marble Caves (Cuevas de Marmol) are found on the shores of Lago General Carrera. We arrived at lunchtime after about 2 1/2 hours on the gravel of the Carretera, just in time to gobble our lunch and catch a tour. The caves are truly marble, in its natural state, of course. As marble (metamorphosed limestone) is slightly soluble in water, wave action along the lakeshore for some 6000 years has carved out low caverns into which you can take a boat. It is possible to rent kayaks in the town for a multi-hour expedition, but as we didn't have time, we took the commercial tour in a small open boat. Sadly, the guide's constant stream of interpretation and information was all in rapid Spanish with no pauses, so I was able to catch only a bit of it myself, and couldn't pass any along to my compa