Dark Caveling Floor Tileケイヴリングの暗い床タイル

A dark version of the ancient floor tiles, it looks much older.
In-game description

How to get Dark Caveling Floor Tile

Placed inside dungeons or scenes (buildings, ruins and so on); break it or pick it up to get itPlaced in: Main Mold Temple [Mold Dungeon], Mold Temple, Ancient Gateway Ruins [The Undergrounds], Ancient Tile Ruins [The Undergrounds], Ancient Pillar Ruins [The Undergrounds], Caveling Throne Room [The Forgotten Ruins], Small Mold Dungeon [Azeos' Wilderness], Malugaz the Corrupted's Dungeon [The Forgotten Ruins], Main Mold Dungeon and 11 more

Scene containers, dungeon placements, guaranteed drops and natural spawns are based on the Obtaining data of the Core Keeper Wiki (Fandom) (CC BY-SA 3.0), because these are not in the game files this site reads. Scene names are the wiki's English names.