Niihau is defined as much by what it lacks as by what it holds. At 69.5 square miles, it is Hawaii's seventh-largest island and its most remote inhabited one. The maximum elevation, Paniau, reaches just 1,280 feet -- not high enough to catch the trade winds that drench neighboring Kauai. The island sits in Kauai's rain shadow, making it arid and dependent on unpredictable winter Kona storms. Droughts have forced evacuations more than once; Captain James Cook's former officer George Vancouver noted in 1792 that the island had been abandoned due to famine. When Cook first visited in 1778, he reported the island treeless. Aubrey Robinson, Elizabeth Sinclair's grandson, changed that by planting 10,000 trees per year during his tenure, gradually increasing rainfall in the dry climate. Today, intermittent playa lakes provide habitat for the Hawaiian coot, the Hawaiian stilt, and the Hawaiian duck. Hawaiian monk seals, relocated from the Northwestern Hawaiian Islands over the past three decades, have found refuge on Niihau's undisturbed shoreline.

Before Sinclair's purchase, Niihau had its own royal history. The chief Kaeokuulani unified the island after defeating his rival Kawaihoa, whose territory was marked by a stone wall called Papohaku stretching across a quarter of the island's southern end. Black stones identified Kaeo's land; white stones marked Kawaihoa's. Kaeo's son Kaumualii, born in 1790, became the last independent ruler of Kauai and Niihau. Kamehameha I unified all the Hawaiian islands by 1795, except for these two. Two invasion attempts failed, with bodies covering Kauai's eastern beaches. Kaumualii finally surrendered peacefully in 1810 rather than risk further bloodshed. When Kamehameha died in 1819, independence briefly seemed possible again -- until the king's widow Kaahumanu kidnapped Kaumualii and forced him to marry her, permanently binding the islands to the unified kingdom.

The 2020 census counted 84 residents on Niihau, though some estimates put the actual day-to-day population between 35 and 50. Everyone lives rent-free. Meat is free, provided by hunting and ranching. There are no paved roads, no stores, no restaurants. The island has a K-12 school powered entirely by solar panels, where student enrollment fluctuates between 25 and 50 as families move back and forth to Kauai. Residents speak the Niihau dialect of Hawaiian as their primary language -- oral tradition holds that it preserves the register spoken at the time of European contact, and linguistic evidence supports this. An Agusta A109 helicopter, maintained by the Robinson family, provides emergency transport and ferries Navy contractors to a small military installation atop 1,300-foot cliffs. That installation, which supports the Pacific Missile Range Facility on Kauai, generates roughly 80 percent of the island's income. The rest comes from hunting safaris -- eland, aoudad, oryx, wild boar, and feral sheep roam the flatlands -- and from the island's most celebrated art form.

The people of Niihau are renowned for their lei pupu, shell leis crafted from tiny shells gathered on the island's beaches. These are not tourist souvenirs. A single intricate Niihau shell lei can sell for thousands of dollars, and the craft is considered so culturally significant that Governor Linda Lingle signed legislation in 2004 to protect them from counterfeiting. The shells are sorted by size and color, then painstakingly strung into patterns that can take months to complete. Another art form unique to the island is ipu carving: a design is etched into the skin of a fresh gourd, which is then filled with dye. Over several weeks, the dye changes the color of the uncarved portions while the carved design remains. Music runs deep here too. A cappella singing in two or three tones with shifting rhythms is a distinctive Niihau tradition, and the island has produced three separate styles of slack-key guitar, the oldest originating from Kohala. In a world that has homogenized most of Hawaii's culture into resort entertainment, Niihau's isolation has preserved the genuine article.

Aubrey Robinson closed Niihau to outsiders in 1915. Even relatives of residents needed special permission to visit. The island passed from Aubrey to his son Aylmer, then to Aylmer's brother Lester, and finally to Lester's sons Bruce and Keith Robinson. The family has drawn criticism for the strict controls they impose, but they have also shielded a community that might not have survived the pressures of tourism and development. In 1944, Franklin D. Roosevelt briefly considered Niihau as a possible site for the United Nations headquarters -- a notion the State Department studied seriously before discarding. The island's political life is small but spirited: in 2008, Niihau's precinct was one of only three out of Hawaii's 538 to support John McCain over Barack Obama. Limited helicopter tours and hunting safaris have been available since the late 1980s, though contact with residents is avoided and no accommodations exist. Niihau endures as a paradox: a place defined by exclusion that has preserved what inclusion tends to erase.