Dimensional Doors

Dimensional Doors is a mod by stevenrs11 about exploration and dimensions. It adds doors that will naturally spawn in the world, called Rift Gateways, which lead to extremely long dungeons with traps and other tricks. Other doors can be used to transport instantly between two locations, and even dimensions. Dimensions can even be created for simple isolation from the overworld. This mod is currently only in the FTB Unhinged modpack.