Advice From Alvin Series




Black Hills Parks & Forests Assn. along with the help of Your True Nature brings you “Advice From Alvin”. In this postcard, magnet, or bookmark you can get some friendly advice from one of Wind Cave National Park’s first explores.

Only 16 years old, Alvin loved the cave and explored by candlelight, unraveling a ball of string to mark his way out and systematically exploring 8-10 miles of passageways within 3 years.

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