This likely refers to a specific piece of media, often modified or uploaded by a user named "Yamil." The "HDR" indicates high dynamic range, often associated with high-quality video, a movie, or a game texture pack.
RAR is a popular file compression format used to reduce file size and split large files into smaller, more manageable pieces for transfer or downloading.
To access the contents, you will need software capable of extracting RAR files, such as WinRAR (Windows), The Unarchiver (macOS), or 7-Zip.