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Survival Lab: Use a Signaling Mirror

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Get full access to Outside Learn, our online education hub featuring in-depth fitness, nutrition, and adventure courses and more than 2,000 instructional videos when you sign up for Outside+ Sign up for Outside+ today.

You may not have cell service in the backcountry, but that doesn’t mean you can’t call for help. Master the humble signal mirror, and you’ll be able to communicate from miles away.