Several vestiges of early 20th-century industry are visible in the park. The first white settlement in the Split Rock area was Little Two Harbors, a commercial fishing village populated largely by Norwegian immigrants. The men of the village fished for trout, whitefish, and herring from 16–18 foot skiffs in the fall and winter. Little Two Harbors was inhabited until 1925, although in later years only 4 or 5 residents lived there year-round. Cement foundations of houses and fish processing buildings remain.