However, here is a scenario that may lead, in a very roundabout way, to an earlier discovery and peoplement of Anctarctica by Austronesian-influenced Native Americans:
- Australia develops an agricultural civilization on the model of Jared's LoRaG.
- Thanks to butterflies, the "ceremonial" replanting of roots customary among Alaskan Dene peoples is picked up by the early ceramic Proto-Eskimo cultures around the Bering Strait at the time of their first appearance around 2800 BC. They expand relatively fast across the Arctic creating an agricultural package very similar to the ones outlined in DValdron's "Land of Ice and Mice" by the early second millennium. Secondary Boreal wet agriculture develops in Canada after that.
- Unlike LoRaG canon, very early Austronesians from the Lapita culture around 1000 BC establish contact with the *Gunnagal in Australia. A more refined and advanced East Austronesian starts *Polynesian expansion almost two millennia ahead of schedule and with temperate and subtropical crops at this disposal. The Pacific becomes a thriving network of trade eventually extending all the way to Andine South America by the first century AD.
- Meanwhile, North America as a whole has an incredible wealth of domesticates and crops, mainly adapted to harsh or extreme climate.
Incrementally refined semi-agricultural or musk-ox herding lifestyle, supplemented by sea resources, expands even in the northernmost reaches of the Arctic. The Austronesian seafareres and *Eskimo civilization put the Americas in at least intermittent contact with Eurasia and Australia.
- The refined Austronesian shipbuilding ability and temperate package of crops and domesticates is adopted by natives of Southern Chile and added to the local package (Llamas and Potatoes). Potatoes introduced in New Zealand allow agriculture in the Austral Islands such as Auckland, Antipodes, Bounty and Macquaire.
- Along all the Pacific coasts of America, a continous stretch of agricultural, metal-using cultures ranging from Patagonia to Alaska is engaged in seaborne long distance trade, as well indirect contact with Australia and the Old World. Shipbuilding by 500 AD is comparable to OTL's Age of Exploration.
- Alaskan *Eskimo traders visiting Patagonia gradually introduce their Arctic agricultural and herding package. Fuegians have access to agricultural techniques, metal tools, advanced ship-building, herd animals like Caribou and sheep. They are big on whaling, and the Arctic crops cause a population explosion. They colonize the Falklands by 800 AD, then South Georgia.
- About 1200, having island-hopped to and through the South Sandwich islands and settled them, *Fuegians whalers spot the South Shetlands. Further explorations lead to the Antarctic mainland.
- As the the South Sandwiches begin to overpopulate, the whaling and sealing camps on the South Shetlands become the centers of colonization. While far from prime land even by *Fuegian standards, parts of the area are sort of arable with their toolkit at this point.
Even later, parts of the Peninisula begin to host permanent population. Maybe mining provides trading goods that allow external contact. By 1600 AD, some non-glaciated parts of Antarctica are home to a permanent human population of *American Natives that lives of a little agriculture, some occasional trade, Caribou and Musk Ox herding, and a lot of fishing and whaling. Maybe they even domesticate some kind of penguin.
Mission accomplished. It took only five-odd millennia, the plunder of two of the best timelines on this site, and a megaton of handwavium.
