This strenuous and yet extremely popular 4-mile trail (six- to eight-hour round-trip) follows Exit Glacier up to Harding Ice Field. The 700-sq-mile expanse remained undiscovered until the early 1900s, when a map-surveying team discovered that eight coastal glaciers flowed from the exact same system.
Today you can rediscover it via a steep, roughly cut and sometimes slippery ascent to 3500ft. Beware of bears; they’re common here. Only experienced glacier-travelers should head onto the ice-field proper.
The trek is well worth it for those with the stamina, as it provides spectacular views of not only the ice field but Exit Glacier and the valley below. The upper section of the route is snow-covered for much of the year; bring a jacket and watch for ice-bridges above creeks. Camping up here is a great idea, but the free, tiny public-use cabin at the top is for emergencies only.