thank you all for the comments! I have reduced the border from 20 pixels down to 10 in response to Sandra and Ambers' suggestions. Also, following Judy's advice, I've adjusted the blue of the border to match a hue found in the sky. The photograph itself remains unchanged from the first version.
This is aMAZING!!!! The barren, rugged look is breathtaking. And I love the perspective of showing the tiny people walking in it. Gives you a sense of how massive and majestic that scene is!
This is beautiful. Love the perspective plus the addition of the human element. I like dark borders, but think maybe a blue found in the actual shot, would serve you better. Even black.