Why do you think there is only grazing no farming at elevation between 10000 and 14000 feet?

At higher elevations, the harsh climatic conditions such as low temperatures, short growing seasons, and poor soil quality make it challenging to grow crops. Grazing is more suitable as it requires less maintenance and can utilize the natural vegetation already present. Additionally, the lower oxygen levels at high altitudes can also limit the types of crops that can be successfully grown.