The parkway is a transitional zone in terms of geology with ancient lava beds being found in the north and the granitic rocks of the Teton Range in the south . The Snake River flows through the parkway as it heads south to Jackson Lake and is considered a prime trout fly fishing area . In Grand Teton and Yellowstone , grizzly bears , black bears , moose , elk , bighorn sheep and mule deer can be found there . The Yellowstone fires of 1988 affected the northern sections of the parkway consuming ) . As of 2005 , the forest had begun to be rejuvenated and wildlife habitat had actually increased due to better mix of meadow and forest lands . A major relocation project for the Flagg Ranch concession operation ( consisting of a lodge , gas station , camp store , cabins and a campground ) from along the Snake River to a point higher up and less visible from the road was completed in 2002 . Rafting is a popular activity during the summer and guided snowmobile tours use the parkway as a starting point for trips into Yellowstone during the winter
Yellowstone fires of 1988
Yellowstone fires of 1988
John D. Rockefeller Jr. Memorial Parkway