A lone peak of high point is a natural focal point in the landscape, something by which both travelers and local orient themselves. In the continuum of landscape, mountains are discontinuity -- culminating in high points, natural barriers, unearthly earth.
The famous Zen parable about the master for whom, before his studies, mountains were only mountains, but during his studies mountains were no longer mountains, and afterward mountains were again mountains could be interpreted as an alleory about [the perpetual paradox that when one is closest to a destination one is also the farthest).