Since this is a 7-Zip archive, you need software capable of extracting it.
This is the native file format for the 7-Zip archiver software . ltlz.7z
did you find this file (e.g., a specific folder, email, or game mod)? Are you trying to extract it or did you create it? I can provide specific instructions based on that context. Since this is a 7-Zip archive, you need
The name is not a universal file standard. Instead, it is almost certainly a customized filename assigned by a user, developer, or a specific piece of software. Since this is a 7-Zip archive