![Here’s a fascinating photo of the Union attempts to undermine the Confederate fortifications at Vicksburg. I would really love to go to the Vicksburg National Military Park sometime, which preserves its fortifications [PDF] and the gunboat U.S.S. Cairo, as well as the graves of 17,000 Union soldiers and the last remaining section of Grant’s Canal, which DPG was involved in digging.](http://25.media.tumblr.com/tumblr_m59a35Ovl71r7wfvoo1_500.jpg)
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Here’s a fascinating photo of the Union attempts to undermine the Confederate fortifications at Vicksburg. I would really love to go to the Vicksburg National Military Park sometime, which preserves its fortifications [PDF] and the gunboat U.S.S. Cairo, as well as the graves of 17,000 Union soldiers and the last remaining section of Grant’s Canal, which DPG was involved in digging.
