The Nether is a dangerous, hell-like dimension containing fire, lava, fungal vegetation, many hostile mobs, and exclusive structures and biomes. In order to enter the Nether dimension, a player needs to construct a nether portal within the confines of the Overworld. It's important to note that... More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.