On a side note, the Tlingit’s were/are badasses. They kicked ass on the russians and were hired to pack 200lb packs up the chilkoot trail. They all seem to be naturally strong. Probably weeded out the weak genes long ago : )
I saw something similar in a 1950s US Army film about the Korean War, part of which showed UN troops employing locals as porters to haul impressively large loads of supplies and equipment up steep trails to hilltop positions.
Another example of a simple-yet-sophisticated solution which the Americans used to address a WWII problem was the Marston Mat, which was conceptually similar to those Meccano construction sets for kids. It required heavy industry to manufacture it in the required huge quantities, but the device itself was mechanically straightforward: standardized sheets of steel mesh which could be laid down in an interlocking pattern, at whatever length and width was desired, to construct runways for aircraft in places where they were needed in a hurry, or in remote locations like Alaska and the Pacific Islands. The Marston Mat, combined with the use of heavy equipment like backhoes and bulldozers – which were commonplace in the US civilian construction industry – and chainsaws, allowed the Navy’s SeaBees (in the Pacific) and the Army’s Corps of Engineers (in Alaska) to turn an area of wilderness into an operational runway in just a few days.