Do garter snakes stay in the same den year after year?

I had a huge garter snake den in my backyard last spring. I got rid of every snake I seen come out of it. Didn't see any snakes all summer near it. Now it is getting fall I have seen snakes rooting around in it again. Big and small garter snakes. I have been watching and getting rid of the ones I see. I would say yes they return year after year to the same den to hibernate and have babies. I chased one over 50 yards before I lost it in through a privacy fence. It was a big one. over two inches in diameter and at least 4 ft long. About 3 hours later it was back. Needless to say it got away.