The caves were formed during the Miocene period, 15 or 20 million years ago. For many years they were under sea level and due to tectonic movements they surfaced.
The Guatuzos aborigines discovered the caves. Limestone rocks, stalactites, stalagmites and corals, form most of the caves. The underground river forms the whimsical stone formations. In the caves we will find marine fossils, and also bats, spiders and crickets. We will walk through the river and waterfalls from the upper part of the cave.
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2009 Rates
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2010 Rates
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Arenal Area
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Adults
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$ 56.00
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$ 58.00
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Children
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$ 45.00
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$ 47.00
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Outside -La Fortuna
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Adults
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$ 65.00
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$ 65.00
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Children
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$ 52.00
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$ 52.00
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Hiking
Adventure