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Soil Growverhaul

UdderlyEvelyn's Soil Relocation Framework is an incredible mod granting the player the power to control their terrain, digging it up, moving it and in effect turning the ground beneath your feet into a new world of resource possibilities. Wolf478's composter addon expands on this allowing the player to go from moving fertile soils to creating them.
Where these two mods walk, it's time to run.

This mod will allow you to dig up everything in your way, if it's not solid rock or underwater you can dig it. Fine sand, mud and marshy soil no longer require a moisture pump, one pawn with a little mining skill and the dig order is all you need.
You can crush stone chunks into gravel, make soils at various levels of fertility with the new gardening bench or surround your base with mud by taking that dirt to the new faucet.
Your faucet and gardening bench are open to medieval colonies but if you're of the industrial sort you'll find marshy soil yields peat and you have a shiny new peat fired generator.

Now before everyone gets too excited this isn't a cheat mod. Wolf's composter can no longer create rich soils from compost, instead compost is used for your normal soils but that coveted rich soil will require worms which must first be pulled from rich soil you dug up and then left to breed in the composter for half a month.

That covers the vanilla content but why stop there? Alpha Biomes, Morrowrim, Advanced Biomes, Regrowth Wasteland and Biomes! Core are all supported. Whether you want to rip up steel from wasteland rubble or harvest volcanic ash to create soils superior to rich soil; the more biome mods you've installed the more options you'll have.
Now while every reasonably diggable terrain can be dug up, not all terrains can be planted. This was an intentional decision to avoid bloating the terrain list too badly, a function vs aesthetic decision had to be made. However, if you want to make an addon adding those, feel free to use this mod as your template for doing so.

In addition to all of the above there's additional support added for my Helixien Additions mod for handling tar, Medieval Overhaul and Rim of Madness bones for your compost recipes and Expanded Materials - Plastic for whenever you dig up a cracked road.

As a final cherry on top if you have Ideology installed and are using MorrowRim - The Sixth House, by choosing Dagoth Ur as your origin you'll gain the ability to extract fertile volcanic ash from blighted soil. It won't be listed on the origin but it is there.

Big thanks to Sir Van for artwork, Ythern for xml and Maxim for C#.

Obsidian update
You can now dig up obsidian shards from suitable volcanic terrain or knap them from Alpha Biomes Obsidian chunks on a crafting spot or stone cutters bench.
Obsidian shards have a beauty score one step below silver and can be used to make extremely sharp but fragile weapons. For something more durable you can make a Macuahuitl which tribal raiders will use.
You can also make royalty approved beautiful tiles out of obsidian shards or you can make alcyonite tiles if you have alpha biomes.
You can now fuel your tribal and medieval society needs off peat and tribal traders will now sell you worms, worm starter, depleted soil, mud, peat and obsidian shards.