"The Forbidden Mine (Part One) / Robot Farm / The Forbidden Mine (Part Two)"
Date Aired:
Jul 09, 1988
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The Forbidden Mine (Part One):
Gumby has a surprise for Minga, Prickle, Goo, and Pokey: a picnic at the very edge of the Grand Canyon. Afterward, they decide to explore an old mine. The mine's caretaker isn't pleased with the idea, but for no reason at