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Success – you’re in the tunnel! You follow it further into darkness until you come to a dead end. You can see light streaming in from above. If the entire operation has taken you 30 minutes so far, what time is it?

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Interesting fact:

The Oregon Trail is known throughout the world. The torturous 2,020 miles was crossed by over 350,000 emigrants. One of every seventeen travelers would lose their lives on the trail.

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