Education time, no offense to anyone. These are typical from the animal being chased during the summer, while there in velvet. Branches poke the antlers and its like punching a hole then it repairs itself. the hole simply heals and when they turn hard they look like that. If theres alot of em, then the animal has been chased alot. Of course were do deer run to? dense cover. Antlers are like radiators when there in velvet it acts like a cooling system for the animals during the summer, the blood flows through and circulates which cools the animal in the heat of the day. So imagine punching a hole in your radiator, and you put stop leak in it, it fills the hole as a temporary fix, and allows the blood to continue to flow through.
Brett