Beginning 1980-ties. Note the fence on the back-ground. This was the first fence to keep monkeys inside and made it possible to let the not-aggresive monkeys to room free at Apenheul.
Beginning 1980-ties. Note the fence on the back-ground. This was the first fence to keep monkeys inside and made it possible to let the not-aggresive monkeys to room free at Apenheul.
