From Longman Dictionary of Contemporary Englishhunting groundˈhunting ˌground noun [countable] 1 DSOa place where animals are hunted2 → a happy/good hunting ground (for something)
Examples from the Corpus
hunting ground• And here is a beaver, indicating a beaver hunting ground.• There is also the fertile hunting ground of health.• I pass up a roadside rest area, a happy hunting ground for new cars and ready cash.• In the early years of this century, many a collector found Madeira a happy hunting ground.• It plans a four-event world championship programme for 1991, starting on its happy hunting ground, the Safari Rally.• The edges of the road are an ideal hunting ground for recyclable bottles and cans. 