Cathedral-1.12.2-1.9.9.jar is a release file of the Minecraft mod Cathedral, made for Minecraft 1.12.2. It was published on March 29, 2020 and is 0.7 MB in size. For the full description, screenshots and every other version, visit the Cathedral mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
