He is captured by cannibals and imprisoned. He hears that he will be killed and eaten on the day of the eclipse, so he asks his guard about how the day will proceed, hoping that he can use his knowledge of the eclipse to his advantage.
"Well, usually we start the fire in the morning and slaughter when the sun is highest in the sky.", the guard says.
The explorer is happy: the eclipse starts just before midday, so the cannibals will release him when he shows his awesome power to take away the sun.
The guard continues, "But in your case, we'll probably delay things a bit so we can watch the eclipse."
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