Redditorr Daminf shared some images on r/Minecraft of a massive iron vein inside a cave. The user added that this was the biggest iron vein they had ever come across in their Realm world.

X-Ray mods have been widely used throughout Minecraft's history. However, no one has attempted to see what the Caves and Cliffs update's new ore veins will look like with an X-Ray.

A Minecraft player makes an incredible discovery while mining, ... they say they were mining when they came across the impressive vein in what they call the biggest they've ever found.

Agnes Larsson, the Game Director for the vanilla version of Minecraft, touched on what she called the “really big ore veins” that’ll get added whenever the Caves & Cliffs update is released.