Kaua'i is geologically the second-oldest of the main Hawaiian Islands. With an area of 562.3 square miles (1,456.4 km2), it is the fourth-largest of these islands. Hawaiian narrative locates the name's origin in the legend of Hawaiʻiloa, the Polynesian navigator credited with discovery of the Hawaiʻian Islands. The story relates how he named the island of Kauaʻi after a favorite son; a possible translation of Kauaʻi is "place around the neck", describing how a father would carry a favorite child. Another possible translation is "food season". On the west side of the island, Waimea town is located at the mouth of the Waimea River, whose flow formed Waimea Canyon, one of the world's most scenic canyons, which is part of Waimea Canyon State Park. At three thousand feet (910 m) deep, Waimea Canyon is often referred to as "The Grand Canyon of the Pacific".