Has anyone built their own permanent round pen? Or at least more permanent than the connectable/mobile stock panel type.
Considering fully enclosed/walled as opposed to open view (if that makes sense?).
What were costs like? Did you haul in footing, level ground, leave ground as it was, ? What kind of footing did you use if you did haul some in?
How big/tall is your pen?
ETA: What do you do to ensure good drainage?