A Polished Deepslate Wall is a refined wall variant crafted from Polished Deepslate, offering a sleek, dark aesthetic suitable for fortresses and underground builds. It connects seamlessly with other walls, fences, and solid blocks, making it ideal for enclosures and structural designs. Polished Deepslate Walls can be mined using any pickaxe; otherwise, they drop nothing.

They generate naturally within ancient cities and can be crafted using Polished Deepslate or obtained through stonecutting. Like other walls, Polished Deepslate Walls can be placed under a note block to produce a bass drum sound.