And, if you follow the directions (forbidden), you`re allowed to walk over it. The stairs are there to step over the fence preventing animals/sheeps from going trough in the summer while grazing . On both sides there are ditches.
Fascinating. We live in Cambridgeshire, UK, close to the fenland areas. Much of our scenery is like this with water ditches going alongside the fields, where the fens have been drained
Ian