Use Google Maps to get the best directions, and you’ll want to put in directions to the parking lot of your choice, as you cannot drive right up to the Jigokudani Monkey Park, only the parking lots.

YAMANOUCHI, Nagano Prefecture—Visitors to the popular monkey park here have been delighted ... be seen relaxing in the steaming waters at Jigokudani Yaen-Koen, leaning against rocks and grooming ...