Here's an interesting story: The real Lord of the Flies: what happened when six boys were shipwrecked for 15 months

The article begins with a discussion of the Golding story, then switches to information about Captain Peter Warner, who discovered some boys actually shipwrecked on an island in the Tonga archipelago. This is the "armchair archaeology part of the story:

On the way home he took a little detour and that’s when he saw it: a minuscule island in the azure sea, ‘Ata. The island had been inhabited once, until one dark day in 1863, when a slave ship appeared on the horizon and sailed off with the natives. Since then, ‘Ata had been deserted – cursed and forgotten. . . .

And here's more from the article:

No one noticed the small craft leaving the harbour that evening. Skies were fair; only a mild breeze ruffled the calm sea. But that night the boys made a grave error. They fell asleep. A few hours later they awoke to water crashing down over their heads. It was dark. They hoisted the sail, which the wind promptly tore to shreds. Next to break was the rudder. “We drifted for eight days,” Mano told me. “Without food. Without water.” The boys tried catching fish. They managed to collect some rainwater in hollowed-out coconut shells and shared it equally between them, each taking a sip in the morning and another in the evening.

Then, on the eighth day, they spied a miracle on the horizon. A small island, to be precise. Not a tropical paradise with waving palm trees and sandy beaches, but a hulking mass of rock, jutting up more than a thousand feet out of the ocean. These days, ‘Ata is considered uninhabitable. But “by the time we arrived,” Captain Warner wrote in his memoirs, “the boys had set up a small commune with food garden, hollowed-out tree trunks to store rainwater, a gymnasium with curious weights, a badminton court, chicken pens and a permanent fire, all from handiwork, an old knife blade and much determination.” While the boys in Lord of the Flies come to blows over the fire, those in this real-life version tended their flame so it never went out, for more than a year. . . .

They survived initially on fish, coconuts, tame birds (they drank the blood as well as eating the meat); seabird eggs were sucked dry. Later, when they got to the top of the island, they found an ancient volcanic crater, where people had lived a century before. There the boys discovered wild taro, bananas and chickens (which had been reproducing for the 100 years since the last Tongans had left).

https://matangitonga.to/2020/04/16/ata-archaeology

http://readingthemaps.blogspot.com/2015/08/the-slave-raids-on-tonga-documents-and.html

https://www.odt.co.nz/lifestyle/magazine/sold-slavery

https://thespinoff.co.nz/books/27-02-2017/they-have-six-fingers-on-their-hands-part-1-of-the-strange-story-of-tongas-lost-island-of-ata/

https://thespinoff.co.nz/books/28-02-2017/a-masterpiece-of-pacific-story-telling-part-2-of-the-strange-story-of-tongas-lost-island-of-ata/

https://thespinoff.co.nz/books/01-03-2017/the-long-nightmare-of-imperialism-part-3-of-the-strange-story-of-tongas-lost-island-of-ata/

https://en.wikipedia.org/wiki/%CA%BBAta

Here area few of the links I found in searching out this story. Down a rabbit hole!