It is a telegraph pole like this, although it is the oldest, but I have no feeling.
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Oldest Telegraph Pole Highlights: Must-See Features and Attractions
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The Oldest Telegraph Pole was built in 1924 (Taisho 12) and is a very old surviving concrete telephone pole in Japan. It sits inconspicuously on the streets of Hakodate, except for a sign next to it indicating that they are ancient Japanese telephone poles. Because there are two telephone poles, they are standing on the side of the road, so they are also called husband and wife telephone poles. Different from many modern utility poles with cylindrical structure, this ancient utility pole is rectangular and quadrangular, which is also its uniqueness.
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Oldest Telegraph Pole Reviews: Insider Insights and Visitor Experiences
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It is a telegraph pole like this, although it is the oldest, but I have no feeling.