The Deepslate mines complex was originally six floors of approximately 45 3x3x4 rooms. Today the floors and walls have been removed leaving a quite large vault space at the bottom of a center aligned open vertical shaft. The ommense amount of deepslate was then used to convert my original meager tower Capstone into a full four wall small village sized castle on the surface, only barely disturbing the total account of deepslate I had originally budgeted the project. Wether in Vanilla or using a resource pack the vault is what I hope will be a beautiful beginning to a awesome build.