In a rustic mountain cabin hideaway, a young woman finds her lover cowering in a room. What is the trouble? Her insistence forces him to calm down enough to the tell the story behind his vanishing, and current condition.
Flashback to a scene where the assistant agrees to accompany the professer, and an indian guide on an exploration of the Grand Canyon, and some unexplored caverns there.
The professor tells about a little known custom of the plains indians locking people in caves as...
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