Pluto mountains

Pluto mountains ridges geomorphology aretesPluto mountains - ridges, aretes, u shaped valleys ...

Are Plutos mountains and other mountains formed by the same processes and are they formed in steps?

Do mountains increase in size and shape but in stages?

NASA’s New Horizons spacecraft looked back toward the sun and captured this near-sunset view of the rugged, icy mountains and flat ice plains extending to Pluto’s horizon. The smooth Pluto mountains shapes ranges pyramidsexpanse of the informally named icy plain Sputnik Planum (right) is flanked to the west (left) by rugged mountains up to 11,000 feet (3,500 meters) high, including the informally named Norgay Montes in the foreground and Hillary Montes on the skyline. To the right, east of Sputnik, rougher terrain is cut by apparent glaciers.

... the setting sun illuminates a fog or near-surface haze, which is cut by the parallel shadows of many local hills and small mountains.
Pluto ‘Wows’ in Spectacular New Backlit Panorama

The reason why mountains on different planets, moons and bodies can look very similar even if they are meant to be made of different material on very physically different places?

Why you can have mountains suddenly rising out of the ground and with small foothills or rolling hills near them?