The road down to Slough Creek Campground is about 2.5 miles of gravel. If it is dry, it tends to have a lot of pot holes. During rainy season, the mud can be very deep. There is also a small hill right at the start that can be difficult to climb if the conditions are poor. However, it is one of the more remote campgrounds in the park with stunning views. Bison are often seen nearby and if you are lucky you may hear wolves at night. The sites are spacious and not too close together. The vault toilet was clean and well kept. I had pretty good service with Verizon.