I have noticed something similar at my place. I have only been hunting my place avidly for about 4 years. It's usually just me hunting so it can be hard to keep up with all the deer movement but I have a few buddies and family members that hunt a couple of days of the year. Anyways, I have noticed that each year, I have one area that is a "hot spot" that gets more activity than all the other places on the farm and much more activity than the year before. One year it was a food plot right in the middle of the property, the next year it was ridgetop with mature hardwoods, the next it was an older logging road coming out of some thick stuff from a clear cut a few years ago, another year was a big bottom with mostly mature hardwoods.