05/18/02 Rocky Mountain National Park-. Brad Baldwin of Eaton and his 15-month-old son, Ethan, watch elk grazing in a meadow near Moraine Park of Rocky Mountain National Park. Chronic wasting disease, already present in the parkÕs elk, is a threat not only to hunting but also to the general enjoyment of wildlife. Of the three million annual visitors to the park, 730,000 come in September and October when the bulls bugle.