The document discusses the challenges of living in mountainous areas. It explains that mountain lands are often empty and many residents live in poverty due to several factors. These include the low oxygen levels at high altitudes, which can cause health issues for those from lowland areas. Mountain areas also tend to be isolated with limited access to infrastructure and services. The terrain is steep and difficult to farm, and the soils are often infertile. Harsh weather conditions like cold winters further exacerbate living difficulties for mountain dwellers.