Shalotung, near Tai Po Market, is one of Hong Kong's loveliest rural areas (see Shalotung superb for scenery, and easy strolling). It's one of the main country park "enclaves" - largely surrounded by country park, but with land that's unprotected.
Sha Lo Tung is a wonderfully tranquil, beautiful place.
Sha Lo Tung
Info from Hong Kong's Great Outdoors
Abandoned farming area in an upland basin surrounded by country park. Trails pass old villages, through former rice fields reverting to scrub, and past stands of majestic trees below the imposing Pat Sin Leng Range. Fairly easy trails lead north to Hok Tau.
Taxi from KCR East Rail Tai Po Market Station may take you; or bus 75K to stop by Tai Po Industrial Estate, and walk up inconspicuous road behind old Fung Yuen Primary School.
Shalotung article on this site
The Kings of Concrete and wannabe kings are queuing up with plans to build on or over some lovely places; and the government seems split between conservation, and dreaming up Big Silly Projects.