Spelunker's Treasures is a Fabric mod designed to add to the sense of adventure underground by adding small things to caves
Currently this merely includes loot chests and monster spawners.
Additionally, it adds loot chests to the nether.
Can I use this in a modpack? Yes.
Can you port this to Forge / <Older Minecraft Version>? I don't have the time to commit to this, unfortunately. However, the mod is under the GPLv3 licence, so you can port it yourself
