Pony Wall
We use treated posts with a rebar stake through the bottom to anchor our pony walls. Each post is then set with two bags of concrete, followed by tamped dirt, followed by one bag of concrete.
Can be as tall as 8’
Treated posts (post sizes vary depending on building)
Can use tongue and groove boards on interior of wall for livestock

This 4' tall pony wall has metal on the exterior.

This pony wall has tongue and groove boards for livestock.