Requested by MrSinister718 in this topic

Made for 1.16.2-rc1

This datapack adds a custom dimension that lets players gather various resources without having to destroy the terrain in the overworld. Any feedback is greatly appreciated, especially since this is my first attempt at using a customized biome source for a custom dimension.

The dimension has deserts for sand, badlands for red sand, ice spikes for packed ice, and gravelly mountains for gravel. Underground, dirt is used instead of stone, so that's also easy to gather there.
To enter the dimension, simply use the command "/trigger srw" while in the overworld. The same command can then be used to return to the overworld.
A single block in the overworld corresponds to eight blocks in the resource world, so it's easy to travel far away in case you can't find the biome you need right away.
Hostile mobs don't spawn on the surface of the resource world, as it's always noon there.
Structures don't generate in the resource world.