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Arenal Volcano ,5356 ft, 1633 m, reveals star trails in the sky and lava flows cascading down the sides. This is an active stratovolcano that has had numerous eruptions since 1968 when its first major eruption killed ~100 people. Costa Rica.
Don Grall/Visuals Unlimited, Inc.
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Visuals Unlimited, Inc. specializes in, microscopy, healthcare, medical, wildlife, underwater, agriculture, and science stock photography.