A Plateau
The height of a place above sea level is called elevation.
The height of a mountain peak above sea level is called its elevation.
Land above sea level is called "elevation" or "high ground." It can also be referred to as "terrain" or "upland."
elevation
A large level area high above ground is commonly known as a plateau. Plateaus are elevated flat regions with steep sides, often formed through geological processes like erosion or volcanic activity. They can be found all over the world and are important habitats for various plants and animals.
I believe the answer you are looking for is a plateau.
Mayan raised roads were called causeways and were 2 to 4 feet above ground level. Some even measured 15ft wide.
A beach above present sea level is known as a fossil beach or a raised beach. These beaches were formed at sea level in the past but have been lifted up by geological processes to their current elevation.
plateau
Plateau
for safety purposes
Plateau, a large elevated piece of land that rises sharply above its surroundings and may be intersected by deep canyons.
The elevation or height above sea level is called altitude.
The height of a place above sea level is called elevation.
so it does not flood
The main channels that cross the mountains of Panama are well above sea level. Ships are raised to reach them, then lowered back down at the other end. To dig a sea-level canal would have required the removal of an impossibly large amount of rock.
The height above or below sea level is "elevation". Altitude is used only for distance above sea level.