a group of parallel mountain range

A high plain

eastern highlands plunge to the Atlantic Ocean 

an extensive generally grass-covered plain of temperate South America east of the Andes

relating to or denoting the generation of electricity using flowing water (typically from a reservoir held behind a dam or other barrier) to drive a turbine that powers a generator.

a high treeless plateau in the Peruvian Andes.

cloth covering hung or held up over something, especially a throne or bed.

 the highest zone of the central Andes.

mountain locations where high elevation results in a markedly cooler climate than that encountered in the lowlands at a comparable latitude