Hiking with Rattlesnakes

Me & Dustin went hiking today at Morrow Mtn. State Park near Albermarle, NC. We had already made it to the end of the trail and had to turn around to head 2.5 miles back to the car. When we had walked maybe 200 yards back down the trail towards the car we heard an extremely loud rattle. Me, being very cautious all the time in the summer of snakes, took off running with Bindi down the trail yelling "it's a rattlesnake!" Dustin just stood still looking around for the snake and spotted this huge 5 ft rattlesnake sitting coiled up about 15 feet away from the trail. He was about as big around as a grapefruit and not very happy that we were in his territory. I got close enough to zoom in with my video camera to video him but was still a good 20 feet away from him...too afraid to get too close.