Seasonal route: The road is subject to closure in winter. A few miles from the Yukon River ferry, ascend to the top of mountain ridges above the timberline on the Top of the World Scenic Highway (PR 9). Enjoy this expansive mountainous panorama on the well-maintained paved and gravel roadway. Although the trees remain green in the Yukon's early arriving fall, the brush explodes with color. Note: The road opens from mid-May to September, closing after the first snowfall.