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Four brave siblings were searching for a home - and found a life of adventure! Join the Boxcar Children as they investigate the mystery of a hidden cave in this illustrated chapter book series beloved by generations of readers. A rockslide strands the Aldens on a mountain! But being stuck on Old Flat Top isn't all bad. As the children wait for rescue, they discover that a secret cave has opened up--one that just might hold legendary treasure!
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🇺🇸 Ship from USA · On Agora since 2026
$7.99