Abyss Gravel is a block that comprises the the first two layers of the Abyss biome. It spawns naturally upon world generation and constantly leaks water. It can be mined with a Nightmare Pickaxe or a Deathbringer Pickaxe. When Abyss Gravel is first mined, it will leave a full tile of water in its place, similar to how mining Hellstone leaves behind lava.
- Abyss Gravel blocks are extremely durable, requiring five times as many hits as Ebonstone Blocks.
- Abyss Gravel is immune to explosives.
- In previous versions of the mod, Abyss Gravel blocks were indestructible and as such could not be legitimately obtained.
- Its name was initially proposed as "Vanadite".