Big skies and glacial lakes

With one million acres of rugged wilderness to explore here in the USA’s Big Sky Country, a trip to Glacier National Park in north-west Montana could fill an entire summer. But let's just take a quick (virtual) trip and visit Grinnell Lake. A seven-mile loop trail, a relatively easy one in this rugged country, takes you to the shores of the lake, which was turned emerald-green by glacial silt.
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