Minecraft wiki entry for The_second_day, associated text: If there are few nearby caves, or they seem too dangerous, you can explore more advanced mining techniques. Remember, if mining, never ever dig a single-block shaft straight down -- you are likely to fall into a deep monster-infested cave, if not into lava! You can, however, dig a mineshaft in a pattern, such that you always have a safe block to stand on as you mine a different block. Such patterns can range from a simple 2x1 pattern (standing in the middle so one of the blocks always supports you), to a 2x2 or larger staircase into the depths. A simple diagonal staircase works too. Just keep a careful eye out in case you break through into the top of a cave or lava pool. If you do dig a vertical mineshaft, bring a lot of ladders to get back up!