There is a portal. It is made out of obsidian. To make it, you have to collect blocks of obsidian and place them in a vertical rectangle which leaves the space in the middle empty. The empty space is three blocks tall and two blocks wide. To start the portal, you must use flint and steel to ignite it and a glossy, transparent purple wall will appear in the empty space between the obsidian blocks. Once the portal is made, the user steps onto the bottom blocks of the portal, into the purple wall and waits for the other world to load. Then the portal takes you to the other world which is a giant cave mostly made out of a red stone-like material and there is a lot of lava all over the place in lakes and even falling from the ceiling in lava-falls. That is how you make a portal.