It's in a book called the "rabbit" and it's definitely Norfolk and like fireman says its probably breckland, they was Warren's all over the UK not just Norfolk, I was at the estate house looking at old maps and one had drawings of rabbits running around the edge of the map and they was several Warren's marked down ,the main one being Triangaler lodge and other one was weekly rabbit warren ,
Triangaler lodge is still standing and still as coney on its grounds ,the rabbit wasn't a pest back then but a valuable food source and also the pelts