Killarney Provincial Park is a provincial park in central Ontario, Canada. Killarney is one of Ontario’s most popular wilderness destinations.The park contains just one campground at the George Lake entrance as it is primarily a wilderness park. There are few facilities to allow visitors a chance to experience the solitude and beauty of its undisturbed natural setting. It boasts spectacular hiking trails and canoe-in back-country camping. The canoe routes include well maintained portages between lakes.The origin of the park is owed to the conservation efforts of artists. Canadian Group of Seven artist A. Y. Jackson was so alarmed by the prospect that Trout Lake (now O.S.A. Lake) was about to be logged that he petitioned the Provincial government of the day to have it preserved.