Mountains have no purpose . Many people do not understand how important mountains are. Volcanoes bring new supplies of minerals to the surface to enrich the land. All soil is produced by sediment eroded from high elevations. Without mountains being uplifted all land would eventually be worn away into the sea and there would be no dry ground on which we could live.
Mountains are a part of the design of the earth.
They recycle earth materials, produce new land, provide barriers to air currents that bring us water, and provide minerals essential to our existence. From a believer's standpoint this is all a demonstration of God's planning and design. The atheist might prefer to see it as a natural consequence of the existence of a terrestrial planet. We may disagree on the cause, but the purpose is clear. Mountains have mystic properties and religious significance .