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What Are These Triangular Signs? (Witness Posts)

In This Guide
  • What is a Witness Post?
  • Where Were They Used?
  • Why a Witness Post?
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In this video I’l shine light on the often asked question, “what are the triangle signs at the tops of mountains?” Well, they’re called witness posts and they were used in surveying. In this video I’ll explain the hows and whys behind them.

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