(Dribbble - Camp Sparrows by Colin Miller) The orange and the white lines on the mountains pop in this logo. Also, the one color throughout maintains unity. The circle shape is repeated 3 times (sun, est., and the main logo itself) which helps the viewer to see a theme. And the brand, Sparrows, is curved to match this as well as to keep your eye moving all around the circle.
30 Amazing Typography Logo Designs for Inspiration