Werl, yeah ok. CIties in Asia have little carts pulled by human beings. Flatter, sure, but are you telling me they couldn’t fashion a llama-width cart that would be a whole lot more efficient than people carrying all their crap? Maybe they just felt they needed the exercise?
People didn’t carry their crap, LLamas packed it for them. Even modern deer hunters use them now because they are so efficient. Do you have any idea what the terrain of the Andes is like? And these roads had to accommodate two way traffic. And much of it needed to be “steps” that carts could not navigate but fleet footed LLamas could, why add the extra weight of the cart up these steep switchback routes?. Truly, what they accomplished with what they had is absolutely incredible.
https://treelinepursuits.com/wp-content/uploads/2017/03/Llama-1-1.png