Plateau


![Road to the ALMA’s Operations Support Facility and then on further to the Chajnantor Plateau at 5000 meters above sea level.[3]](/uploads/202501/20/The_Road_to_the_Stars1959.jpg)
In geology and earth science, a plateau (/pləˈtoʊ/ or /ˈplætoʊ/; plural plateaus or plateaux), also called a high plain or tableland, is an area of highland, usually consisting of relatively flat terrain that is raised significantly above the surrounding area, often with one or more sides with steep slopes.