The best and the only Tip you need to know about Mountain Photography is that the best Time for TAKING PICTURES OF ANY MOUNTAIN AROUND THE WORLD is SUNSET AND SUNRISE, Because is that exactly moment that the Sierra, or Mountain show its truly colors and TONES.
In the pictures Sierra Cucapá an ancient Tribe place of Connection with the Universe,Healing, Live and Trascend.
When looking at your photos you get that sense of very far wide open spaces and a sense of quietness too. As you say, that golden hour when the light changes colour is the time to be out their, lense cap off. Be safe from South Africa