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Masonry arches, Dry Tortugas National Park, 2015.

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Masonry arches, Dry Tortugas National Park, 2015.

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Summary

Most of Fort Jefferson consists of gunrooms known as casemates. This honeycomb of masonry arches served as the backbone of the fort and allowed it to be constructed with 45-foot tall walls. It is also what enabled the impressive plans to handle the firepower of 420 large cannons. The fort was never completed, however, and many of these casemates never received the armament for which they had been planned. Instead, many on the second tier became homes to soldiers as well as prisoners.

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Date

2015
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Source

National Parks Gallery
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Public Domain Dedication

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fort jefferson
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