Part way through the forest is an old and odd-shaped stump that the dogs ALWAYS rush to and smell up and down, and on the top. We call it the scenting post, as it seems obvious that something (s) either walk over it and scratch or rub on it. Our dogs never have tried to "mark" it, but just enjoy smelling it. They always rush to it, and I've never been able to get there fast enough to get any pictures. Today, with Tank and Trust, I had them 'wait' about 15' back on the path, and I walked up ahead.
Trust is working on the top, while Tank goes to the base.