Most of the countryside round our part of the world (somerset) has a landscape characterization made by the planners/archaeologists. There are a couple of golf courses round Bath that have round barrows as well. The one nearest to me has roman buildings under the Fairway?? plus it abuts an iron age hillfort, so presumably it is protected. Read a desktop survey by archaeologists when the golfcourse wanted to plant trees, so in this instance there is a cordinated policy to protect the landscape and its history, its the farmers that are more destructive.