in 4K Ultra HD, All Wallpapers, Nature, Retina DisplayFantasy Cave 5-26-2017 7 years ago by Timothy Borkowski This was at Crystal Caves of Bermuda (more specifically, this is Fantasy Cave). I took this in October of 2016. Phones & Tablets iPhone & iPod Touch 1080×1920 iPad 2048×2732 Android Phone 1440×2560 Android Tablet 2560×1800 Social Media Facebook Cover Photo 851×315 TVs & Computers Ultra HD 4K (3840×2160) Full HD 1080p