Minecraft wiki entry for Mining, associated text: This type of mining can be done at any level, and will mostly get you the same amount of quartz and gold, but this method is a lot more bland, but safer, and can get you ancient debris. This method is done similarly to in the overworld, but is more dangerous as you will run into many little lava pockets.The best way to prevent this is carry a bucket right next to your pickaxe since you can only run into source blocks(if you’re in java, you’ll be able to put it in your offhand).