sunrise from a mountaintop; the rising sun (as a sacred sight)
Primarily refers to the sunrise as a sacred or awe-inspiring sight viewed from a high mountain peak, especially in contexts like climbing Mt. Fuji. The second gloss 'the rising sun' is a more general, less common usage.
We worshiped the sunrise from the summit of Mt. Fuji.
The main purpose of the climb is to see the sunrise from the mountaintop.