Acid bath was a sludge metal band back in the 90s, their bassist died and they split up. Just recently started listening to them. I think it's a shame they're not still making music.
Their sound they've got is awesome, it'll mostly bring you down with dark sounds and dark lyrics, but it'll have these moments of highs. The singers vocals are amazing, I love listening to this band.
Anyway, give them a listen. And also, does anyone know any bands that sound like them? Thanks!