What is up warped mountain?

An upwarped mountain is a type of mountain that has a crestline that is highest in the middle and slopes downward toward both ends. This shape is often the result of folding or faulting of the Earth's crust, which can cause a central section of the mountain to be uplifted while the outer edges are lowered. Upwarped mountains are common in areas where the Earth's crust is under compression, such as along plate boundaries or near faults. Some examples of upwarped mountains include the Rocky Mountains in North America and the Andes Mountains in South America.