https://github.com/sparr/factorio-mod-pipe-dream
Features:
- Half and fully buried pipes. Passable for the player and car and biters. Can be repeated indefinitely without coming above ground. Cannot turn. Fully buried can go below buildings and rocks and water.
- Long pipe to ground. Same as the normal one, but goes twice as far.
- Underground pipe tap. Connects above and below ground in all four directions.
- Fully buried pipes can overlap with themselves. Do not drag to place them, you will get duplicates!
- Artwork is comprised of simple crop/mask of stock pipe art. Looks bad in many configurations. Overlaps weirdly.
- No way to dig up a buried pipe under a building without removing the building.
- Core game 0.9.2 requires you to build a pipe to ground afterwards if you want it to directly connect to a buried pipe more than one tile away.
- In 0.9.1 and earlier, multiple underground connections from the same pipe fail frequently