Based on the file extension and name, oggpv153.mcpack is a Minecraft Bedrock Edition resource pack file. These files are typically used to modify the game's visuals, such as textures, or audio elements. Content Overview
Structure Overlays: Mapping for Villager/Pillager mechanics, Witch huts, and Guardian spawn spots in Ocean Monuments.
Do you have a specific link to where you found this pack, or can you describe what it's supposed to change in the game? Tutorial:Loading a resource pack - Minecraft Wiki
Atmosphere: Replacing the default background music with custom soundtracks or ambient nature noises.