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Frozen lake in Alaska sang
Traveling to Alaska, tourists came upon a frozen pond. Stop to enjoy the beautiful scenery, is open from the shore, one of the travelers threw a stone into the water. Suddenly, the ice of the lake heard a strange sound, reminiscent of birdsong. The surprise of tourists there was no limit. For a moment they were speechless. What was the cause of the mysterious phenomenon, and remains a mystery, reports Mirror.
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