Bull Snake

I was leaving the yard to take my afternoon walk on the property when I almost stepped on this guy. I didn't see it at first because it was mostly underground. There was a little pile of dirt around the snake, like it was digging itself a hole. When I stepped next to it I guess the snake noticed my movement so it backed out of the ground. It slithered away just a little and then curled up. I also stepped away in the opposite direction of the snake. And then I looked at its tail. I was praying it wasn't a rattlesnake. Thankfully, it was a bull snake. So I started taking pictures.