No, not all deserts are surrounded by deserts.
Many if not most deserts have mountains.
I live in a high desert in western Colorado. It is surrounded by mountains. No prairie's.
the Anatolian Plateau
Yes, there are mountains in the desert. They are a common feature.
Mountains in deserts are called . . . . . . . . mountains!
barter goods with neighbors
Valley
Yes, Brazil has mountainous regions, such as the Serra do Mar and Serra da Mantiqueira. However, Brazil does not have deserts; its landscape is mostly covered by rainforests, savannas, and wetlands.
Antarctica is surrounded by the Southern Ocean, it is not surrounded by mountains.
Becaue they were surrounded by deserts
deserts are dry land areas where it is hot all the time and mountains are high areas where it is cold because of how high it is.
There are no mountains, deserts or oceans in or near Indiana.
Mountains can create deserts through a process called the rain shadow effect. When moist air from the ocean rises and cools as it reaches a mountain range, it releases precipitation on the windward side. By the time the air descends on the leeward side, it is dry and has lost much of its moisture, creating arid conditions and leading to desert formation.