Capturing silhouettes during sunrise requires positioning your subjects between the camera and the rising sun. This way, the light from the sun will be behind them, creating a striking contrast between the dark outlines of the subjects and the brightly lit background. Pay attention to the composition and positioning of your subjects to achieve the desired effect. I can imagine that the combination of the rocky landscape, the early morning light, and the silhouettes created a truly captivating atmosphere. If you have any photos or further details about your experience, I'd be glad to hear more about it!