puna

This term is a specific geographical designation used primarily in the context of Andean ecology and geography. It refers to the cold, high-altitude grasslands found above the tree line, characterized by extreme diurnal temperature swings and low oxygen levels.

Because it describes a unique ecological zone, it is typically used in scientific, environmental, or travel contexts. It should not be confused with general "plateaus" or "highlands," as it specifically denotes the South American Andean environment.