Yes, many deserts have valleys, especially if a river flows through it.
The arizona desert
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A desert can include a plain, a mountain, plateaus, valleys - almost any landform imaginable.
Switzerland has no deserts. The country primarily has mountains and valleys.
A valley in Evony is a Flat, Lake, Desert, Grassland, Hill, Forest.
Rocks, canyons, mountains, mesas, valleys, rivers, plants, animals of many species. A desert is much more than sand.
Deserts may have valleys but they also may have plains and mountains. The anwer to your question is 'NO.'
Coastal plains, mountains, desert-like wilderness, and fertile inland valleys.
Yes, deserts may have hills and mountains as well as valleys and plains and rivers.
The four regions of California are the desert, mountains, valleys and coastal regions
Coastal plains, mountains, desert-like wilderness, and fertile inland valleys.