This took the form of a " sunk fence " from the canal to the gate piers on the path.
2.
"The contiguous ground of the park without the sunk fence was to be harmonized with the lawn within; and the garden in its turn was to be set free from its prim regularity, that it might assort with the wilder country without ."
परिभाषा
a ditch with one side being a retaining wall; used to divide lands without defacing the landscape पर्याय: ha-ha, haw-haw,