This is the 7th part of a "split" archive. To access the movie, you would need all the parts (Part 01, 02, etc.) in the same folder and use a program like WinRAR or 7-Zip to extract them.
It is a slow-burn supernatural horror that focuses on occult mathematics and a "haunted" house with a dark history. About the File Format thecellar-dual-remux-p2p.part07.rar
This indicates the file contains the original video and audio streams from a Blu-ray disc without any loss in quality (no re-encoding). This is the 7th part of a "split" archive