tank_rzd.zip is a release file of the Minecraft resource pack TANK RZD Russian Railways, made for Minecraft 1.12.2. It was published on July 18, 2019 and is 3.9 MB in size. For the full description, screenshots and every other version, visit the TANK RZD Russian Railways resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.