One of the most special things about climbing mountains is that you get to see the dawn from on high. You start climbing in the dark because the snow is hard and features are firm and things are safer. One side benefit of that (besides not being able to see how long you have to go) is that you get to see the sun come up with the world below you. The sunrise on Rainier was stunning.
(I deleted and re-uploaded this one as I reworked it a tiny bit)