The Manarai Mountains were a park that contained the last exposed land on the otherwise completely industrialized planet. Polar ice caps that don't reach the ground and artificial lakes and seas built atop urban layers are sometimes mistaken for actual surface, although the Manarai are the only actual place where natural terrain is visible on the entire planet. A small cluster of mountaintops breaks through the vast urbanization to provide a small range, punctuated by two peaks.
