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Nelson’s monument on the top of #CaltonHill looking gloomy today. The top of the monument has a ball that would drop at exactly 1:00pm everyday to help sailors at port set their clocks for navigation. During foggy days the 1:00 o’clock gun would fire, for the same effect. To ensure they were linked and accurate a cable ran the length between the #Castle and Calton Hill. #Edinburgh #History #EdinPhoto

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Photo taken at: Calton Hill

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