Raetia Prima – high-resolution aerial film of Graubünden Published on 15th March 2016 If you have a large monitor, use the options in the embedded video player to go full-screen and to switch to 4K (2160p) resolution. By Kevin Walker, via TechBlog. Topics Drones and drone photography, graubünden, Switzerland, Travel and tourism, Video Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website This site uses Akismet to reduce spam. Learn how your comment data is processed.