It is mainlydistributed in the riftvalley zoneorhot spotdistrict of northeastward Yangming mountain, Xiangtan, which corresponds to themantle-uplift district.
Brigadier Gordon Messenger, a spokesman for the British military, conceded on the Today programme that the security zone in the Sangin valley is just "several square kilometres" in size but added that this provides a haven for the local population.
Finding a Mediterranean climate characterised by warm, dry summers and cool, wet winters, they successfully planted their own vines and have kept the valley dry grown (ie no irrigation zone) for more than 150 years.