From the wriggly-one-celled bacterium to a sleeping grizzly bear, the cave is alive with activity and musty with history. Detailed illustrations and safe activities shed light on a mysterious habitat, complete with creepers,...

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From the wriggly-one-celled bacterium to a sleeping grizzly bear, the cave is alive with activity and musty with history. Detailed illustrations and safe activities shed light on a mysterious habitat, complete with creepers, crawlers, swimmers, and fliers--hooters, buzzers, and growlers!

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