[jcims]

>Why climb the large mountain to store your grain there just to have haul it back down later?

Yes and after going on a trip to Machu Picchu a few years ago, the locals don't seem to feel gravity quite the same way most of us do these days. There was a gal on our 4 day hike that got hit pretty hard with altitude sickness a day in. A local porter about her size carried her on his shoulders for the rest of the trip, in flip flops, and the only reason he stayed back with our slow asses was so she could talk to her husband along the way.

It's the most visceral experience I've had in the levels upon levels of human capability. Really wild to see in person.

Also Peru is phenomenal.

[sandworm101]

High and dry, a good place for preservation of organic material. Maybe the holes were simply to get out of the wind.

New idea: this looks the the holes on the surface of a golf ball. Maybe this was an attempt to alter the wind as it crested the hill? Would a strong wind perhaps even whistle as it passed over these holes?

[LorenPechtel]

That's within the range you can acclimate to. They don't feel the altitude like we do.

I've made an attempt on Kilimanjaro. We ascended the first three days with porters but no guides. Our guides met us at that camp, they had come up in one day--they did it all the time, going from the surround to the summit in one day was possible and safe. For us--out of the question. The expected outcome would be unconsciousness before reaching the summit.

[WalterBright]

If you went up and down Machu Picchu every day for years, I bet you'd perform like the porter.

[close04]

Genetics probably play a big role in the necessary adaptations beyond a certain point.

[prmoustache]

From a pure endurance sports point of view, natural ability of latin americans in altitude has been successfully reached by other athletes through altitude training camps, tents simulating altitude and drugs (epo,...).

[AngryData]

I mean it can certainly help, but this is still well within an average human's range of adaptability. Building up new muscle "easily" (and also atrophying muscle when it isn't used) is one of human kind's super powers in the animal kingdom.

You aren't going to run into any real significant physical limits from your genes until you are pushing beyond what the top 1% of other humans can do, and being able to run up and down mountains all day isn't something only a portion of the locals could hope to achieve, native to the area or not, they just gotta do it for long enough.

[WalterBright]

Perhaps. The Sherpas, too.