Several years ago, I sat down on the corner of a monument at Antietam for a break and a snake came out from under the monument and slithered across my foot. When I regained control, I headed to the Visitor's Center to regroup and when I told the Ranger about my encounter; he told me the snake's name and that it lived under the monument. He seemed more concerned about what I had done to the reptile more than what the reptile had done to me. Also, keep in mind that it is mating season and this makes them even more aggressive.