I saw a snake like that in Massachusetts about 15 years or so ago. I was walking around the back of my parents 200+ year old rock foundation house, BAREFOOT, and the thing came out of the foundation and slithered right by me. I nearly took a heart attack for real. I guessed the one I saw to be between 6 and 8 feet long and it was black too the best I could tell. I hope I never see another one.