[masraum]

Originally Posted by GH85Carrera

It's interesting to me. When I see monsterous jagged rocky mountains, my gut thinks "those are giant, ancient mountains," and when I see soft edged, smaller mountains with more vegetation, I think "those seem young."

But it's actually opposite. The older softer edged mountains are softer edged and covered in more vegetation because they've been worn down by the elements over the millenia. But the younger mountains don't have the benefit of as many millions of years of erosion to have worn the edges off and rounded things. And all of that erosion, and all of those years causes a build up of earth where vegetation can take hold.