I'm working on my first Etho mob grinder using his revised underground system:
My location and world type couldn't be better - the top is on a tiny island off the shore of a plains biome. This means theoretically there should be very few other places for the mobs to spawn.
However I've dug down 24 blocks and come across a huge deep underground chasm right where half of my mob grinder should go. I can't see the bottom and can only see one end.
So I want to ensure the chasm won't act as a spawning ground for mobs as this will impact the efficiency of my mob grinder.
What is the easiest way to achieve this? Here's a few thoughts I had:
I could go down to the bottom of the chasm and cover it with torches. This would stop mobs from spawning on the ground, but I think there might be lots of ledges etc. which would be hard to light. I'm also not sure if spiders spawn on walls.
I could fill the chasm with water. Theoretically it's under the sea but even if I tunnel up to the sea floor (through 15-20 blocks) would I have to make multiple shafts or even clear the entire top to properly flood the chasm?
I could try to fill it with hard fill but this would take thousands of blocks.
There is easily accessible lava near by - I could use a bucket system to fill the chasm with hot magma
I'm only in Survival mode so while I can die I'd like to avoid it if possible.
Thank you in advance.