This image shows the ramp that provides access to the ravelin, a detached fortification outside Fort Marion. There are two square pillars at the entrance. To the right, the walls of the main fort can be seen, as well as the bridge that connects the ravelin with the fort. Fort Marion is also known as Castillo de San Marcos. The fort is on the National Register of Historic Places, and is a National Monument.
Stereoview courtesy of Douglas Hendriksen. Image retouched and converted to anaglyph in 2011 by the Florida Center for Instructional Technology at the University of South Florida, Tampa, Florida. View this image using 3D glasses with the red lens over the left eye and the blue (cyan) lens over the right eye. This image is also available as a standard 2D photograph.
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