The origins of this ancient fish pond, which is less than a mile inland from Nawiliwili Harbor, remains a mystery and has long been shrouded by tales and legends. Fed by the Hule‘ia River, the freshwater pond is made up of a lava rock wall measuring 900 feet long, four feet high and nearly five feet thick. It’s an archeological marvel for its era, considering the pond is more than 1,000 years old. Native Hawaiian legend says it was built in just one night by the menehune, mythical “little people” akin to leprechauns according to Hawaiian folklore. Archeologists have noted the pond’s walls were not built by the same construction techniques that Native Hawaiians typically used. Although much of the pond has succumbed to invasive mangroves, this structure is definitely worth a visit.