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The Great Wall is not terribly tall, but it's really, really long: over 6400 km in total. Many parts of it follow mountain ridges (which provided natural protection) which means that sections of it are really steep, like here. |
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<---
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The Great Wall is not terribly tall, but it's really, really long: over 6400 km in total. Many parts of it follow mountain ridges (which provided natural protection) which means that sections of it are really steep, like here. |
--->
|