What is needed to protect long-distance minecart lines?
When building a minecart rail through multiple overworld biomes, what do I need to do to stop mobs from blocking the track?
The track will have tunnels, raised tracks, and tracks on the ground at various points. How do I stop spiders, etc from climbing or spawning on my tracks, especially when an above ground track goes into a tunnel?
Best Answer
The only truly foolproof methods for a safe area out in the open are:
A running water moat (ie dig a 1x4 ditch each side and fill the closest block of each moat with water)
Or a 2-high wall with an overhang, on each side of the track, with the track section lit. Fencing or glass will give a better view, but are more resource (in-game, not PC) heavy.
In a tunnel, light the inside well and construct minecart doors at each end using activator rails and pistons
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What blocks can minecarts pass through?
All types of minecarts can pass through a block if it's not a full-block, as long as there's any rail under that block.How far can minecarts travel?
A plain minecart with you in it will travel at maximum speed for 38 blocks on flat ground after passing over three powered rails in a row. To maintain top speed, place one powered rail every 38 blocks. An empty plain minecart will only travel eight blocks at top speed after passing over three powered rails.How far will a powered rail push a minecart?
Luckily, you can also make powered rails in Minecraft that can boost you further. Powered rails will push your minecarts up to eight blocks a second. They can also push you uphill if you place enough of them.✔ Minecraft: How to make an Automatic Item Transfer System
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Answer 2
Something that will help protect from all mobs are cacti. With Cacti scattered throughout the area you can make a x2 wall so that zombies and skeletons can't climb the cacti (If they pass it).
Place the cacti like so: C is cacti X is blank sand.
CXCXCXCXCXCXCX
For tunnels I would just put torches. If you don't have the materials for that, Placing water like a moat around the tracks would prevent the spawning and climbing of the mobs. Use the moat like this: W is water, X is air, T is track, C is a block of cobble stone.
X-X-TX-X
WWCWW
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Images: Karolina Grabowska, Armin Rimoldi, Alena Shekhovtcova, Monstera