Eielson is the most common turning-around point for day trippers taking the shuttle or tour buses into the park. This remote outpost is built directly into the tundra slopes and the mountain seems to almost loom over you from the observation decks. Inside there’s a massive panorama to give you an idea of the mountain’s topography, as well as more utilitarian features such as toilets and potable water.
You'll also find two steep trails – one that leads up to ridge lines that tower over the park, and one that plunges to a riverbed where wildlife spottings are not uncommon (and sometimes far too close for comfort). Two ranger-led hikes are offered daily in summer: a two-hour, two-mile alpine hike, starting at noon and heading up the ridge behind the facilities; and an easier one-hour, 0.5-mile loop, starting at 1pm.
Note that there's no food available here.