Long before Europeans arrived, this was Dingaal country, and it was sacred. Jiigurru served as a place for ceremony and trade, and for the initiation of young Dingaal men into adulthood. The connection runs astonishingly deep. Excavations have shown people occupying the island as far back as roughly 6,500 years ago, making it the earliest offshore island settled on the northern reef. A 2024 study went further, revealing that the Aboriginal people here built ocean-going vessels and navigated the open sea, and that they made pottery, a discovery that overturned a long-held assumption that Aboriginal Australians never did. The senior elder of the Dingaal today is Gordon Charlie, and his people, alongside the Guugu Yimithirr, have held custody of this water and stone for thousands of years.

In August 1770, James Cook arrived in trouble. HMS Endeavour had been holed on the reef and patched at the river mouth that is now Cooktown, and Cook needed a way out through the labyrinth of coral that hemmed him in. He landed on the island, noted the lizards, and climbed its highest granite peak, scanning the breakers for a gap to open water. From the summit he found his passage. That peak has been called Cook's Look ever since. It is a punishing climb of about 360 metres, but the reward is the same panorama that decided the fate of his voyage: reef and channel and sea spread out in every shade of blue, the whole puzzle visible at a glance.

In 1879 a beche-de-mer station was set up on the island's northern bay to boil sea slugs for the Chinese market. Robert Watson ran it with his young wife Mary and two Chinese workers, Ah Sam and Ah Leong. What the newcomers did not grasp, or did not heed, was that their operation sat on sacred initiation ground. In late 1881, while Robert was away, Dingaal men came to the island. As the elder Gordon Charlie has explained, the intent was not to murder but to drive the intruders from a holy place. In the violence that followed, Ah Leong was killed and Ah Sam was speared. Mary fled with her baby and the wounded Ah Sam in a cut-down iron boiling tank, and the three died of thirst on a waterless island days later. Her diary survives in the State Library of Queensland.

Mary Watson's death stirred deep public grief, and grief on the frontier too often curdled into vengeance. A punitive expedition went out, and many Aboriginal people were killed in retribution, including people who had nothing to do with what happened on the island. It is the cruellest part of the story: innocents punished for a defence of their own sacred country. The island holds both tragedies at once now. The Dingaal regard Mary's ruined cottage as a symbol of the violation of their sacred sites and the end of their traditional ways, while the wider memory long honoured Mary as a heroine. Both are true. Neither cancels the other.

Today Jiigurru wears two more identities. On its westernmost point sits the Lizard Island Research Station, run by the Australian Museum, where scientists study coral, fish, and the health of a reef under stress from warming seas and bleaching. On the northwestern shore stands an ultra-luxury resort, reachable mostly by light aircraft, where guests pay handsomely for white sand and turquoise water. Around it all spreads the national park, gazetted in 1939, where monitor lizards still bask exactly as they did when Cook named the place. Sacred ground, scientific outpost, exclusive retreat, and the setting of a frontier tragedy: few small islands carry so many stories on so little granite.