the cole dolgoch.zip is a release file of the Minecraft resource pack Cole's Talyllyn Railway No. 2 "Dolgoch", made for Minecraft 1.12.2. It was published on March 26, 2022 and is 28.4 MB in size. For the full description, screenshots and every other version, visit the Cole's Talyllyn Railway No. 2 "Dolgoch" resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.