But in the park, park rangers did that in the 1920s, and then 60 years later they had to bring them back, because the elk numbers had gotten out of control.
Rojet e parkut e bënë këtë në vitet 1920 dhe 60 vite më vonë,  iu desh t’i sillnin prapë, sepse popullsia e drerëve doli jashtë kontrollit.