Pomona, or Mainland, the largest island in the Orkneys, has a low treeless surface, many lakes, and extensive pasture-land; agriculture has of late improved, and, with stock-raising and fishing, is the chief industry; the only towns are Kirkwall and Stromness.

Pomona, in the Roman mythology is the goddess of fruits, who presided over their ripening and in-gathering, and was generally represented bearing fruits in her lap or in a basket.