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The Tunnel Challenge
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Hand Tools Beneath City
You're on the right track. But the more you dig at this soft sand with a shovel, the more the sand will cave in on you!

Hand tools _+_ Soft sand __ Caution
Learn more       Tunnel Score: 10

Even today, tunnel diggers use hand tools to carve tunnels through soft sand -- but they always support the sand around them while they dig. In order to build a tunnel in these sandy conditions, you'll need to support the loose soil to prevent it from collapsing. Try again!


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