Last year's flooding of the Mississippi River didn't do any direct damage to the site of one of the pivotal battles in the Civil War. It did bring in some undesirable neighbors.
Officials at Vicksburg National Military Park say a pack of feral hogs seeking higher ground have moved in.
They're rooting around in trenches and earthworks where thousands of Union and Confederate troops fought and died in 1863. The park's 1,370 monuments could be endangered.
Park superintendent Mike Madell says rangers have removed 11 hogs since they first appeared.
He thinks another dozen are on the loose. He's concerned they could undermine monuments and startle or injure the more than 1 million annual visitors to the park.