Foto Friday – Sprague Lake in Rocky Mountain National Park October 12, 2018 by Eric D. Brown, D.Sc. Sunrise over Sprague Lake in Rocky Mountain National Park. Made with Sony A7rIII and Sony FE 24-70mm f/2.8 GM Lens. Click the photo to be taken to a larger version on 500px. Purchased a copy of Sunrise and Fall Colors for your wall.