(31 Dec 1990) EF313/D STORY: Development for leisure pursuits is threatening the unique landscape and the plant and animal life in the Cairngorms, Britain's highest, and one of its largest, wilderness regions. Conservationists are battling to have it declared a national park, but there are conflicting commercial interests, keen to open up the Cairngorms for skiing activities. SHOWS: vs scenic aerial shots of mountains; sot hills walker Adam Watson; vs scenic shots of the mountains; tracks