Disc Golf Tees
Disc Golf Tee's can vary. Usually they are made up of concrete, tar or some type of mat usually rubber for grip. making a trapezoid, square or rectangle shape.
Some are just marked with flags or a piece of 2X4.
Some players just create their own and you can see where they are by the dirt patch and where the grass has worn out over time.
Usually this is done because the course doesn't have Disc Golf "long tee's" installed and the players like to add to the challenge.