Prehistoric Dimension

The **Prehistoric Dimension** is a dimension containing many of the prehistoric plants and animals that once lived in the Overworld. The Prehistoric Dimension also includes exclusive biomes and structures.

## Accessing

To access the Prehistoric Dimension, the player must construct a Prehistoric Dimension portal in any other dimension. To create the portal, the player must first build a rectangular obsidian frame floor with the rest of the frame being hardened clay, ranging in size from a minimum of 4×5 to a maximum of 23×23. Once the frame is built, it can then be activated by placing fire within the frame, using flint and steel, fire charge, dispensers or any material that is capable of igniting fire.

The portal allows most entities (with the exception of the Wither, the Ender Dragon, and entities riding or being ridden by another entity) to be transported to a corresponding portal in the Nether. In Survival, the player must stand in a Prehistoric Dimension portal for 3 seconds to get to the Prehistoric Dimension. The player can step out of a portal before it completes its animation to abort the teleport. The portal generates a sound effect while the player is inside it. If there is no corresponding portal, a new 4×5 portal is created. The portal can be destroyed by breaking the obsidian frame, by a nearby explosion, or by placing water in the other dimension or lava into it with a bucket or dispenser. Any of the blocks in the corners can be destroyed without destroying the portal.

## Environment

The Prehistoric Dimension is an incredibly complex environment with a wide variety of features.

### Biomes

The Prehistoric Dimension is divided into biomes of various types. A biome's type determines the basic characteristics of the terrain within it, and almost all of them have several variations that alter these characteristics to create more realistic terrain. The biome type also influences the biome's size, determines which mobs can spawn within it and affects how environmental behaviors such as weather are expressed within it.

#### List of biomes

* Wild Plains
* Cycad Forest
* Sigillaria Swamp
* Fossil Mountain
* Primal Coast
* Forgotten Seas
* Lost Reef
* Frigid Bonelands
* Ancient Graveyard

### Natural structures

The Prehistoric Dimension, like the Overworld, is composed of a large number of terrain patterns, called generated structures, whose arrangement varies widely from one seed to another. The exact structures are unique to each world, while the types of structures that can be generated at a given place are determined by the biome type. Structures are meant to represent real-world equivalents such as mountains, caves, and lakes. "Impossible" (in the real world) formations, such as floating islands, can also be found throughout the Prehistoric Dimension.

Along with terrain features, natural structures include naturally-generated buildings, such as villages and ruined Prehistoric Dimension portals.

### Daylight cycle

Like the Overworld, the Prehistoric Dimension has a daylight cycle and is one of the only ones where the environment reflects the passage of time. In contrast to time zones in the real world, Prehistoric Dimension's time is universal; it is always the same time for every player in the dimension regardless of how far apart they might be, even in an "infinite" world.

During the daytime, the sun acts as a powerful light source, with a light level of 15, the maximum. Sunlight is strong enough to grow plants and affect the way mobs spawn, among other interesting effects. During the nighttime, the moon is the only natural light source. However, moonlight is comparatively dim; the light level falls to a minimum of 4, allowing nocturnal hostile mobs to spawn. Other than during thunderstorms, nighttime is the only time players may sleep in a bed.

The daylight cycle can effectively be measured using a clock, which allows players to determine the approximate Minecraft time anywhere in the Prehistoric Dimension. Time can also be changed or stopped with the use of the time command.

The sun rises in the east and sets in the west, just as it does in the real world. Observing its motion is a simple method of telling direction without a compass.

### Blocks

The Prehistoric Dimension has plenty of blocks that are exclusive to the dimension. Blocks are the basic units of structure in Minecraft that make up the game's world. Many blocks can be collected and placed anywhere in the game's world, as well as be used as helpful resources.

* Ancient Grass
* Ancient Soil
* Limestone
* Slate
* Breccia
* Smooth Limestone
* Smooth Slate
* Smooth Breccia
* Cycad Sapling
* Cycad Log
* Cycad Planks
* Cycad Leaves
* Tungsten Ore
* Bronze Ore
* Jade Ore
* Malachite Ore

### Mobs

The Prehistoric Dimension is home to a wide variety of mobs. Mobs vary greatly in behavior and the level of danger they present to the player. Different mobs spawn at different times and places depending on the light level and the biome, among other factors. On occasion, a mob can move between the Prehistoric Dimension and another dimension, such as The Overworld and The Nether, by using a portal, but this is uncommon. Boss mobs like the Ender Dragon and the Wither cannot enter portals.

#### Animals

* Tyrannosaurus
* Triceratops
* Stegosaurus
* Brachiosaurus
* Amargasaurus
* Parasaurolophus
* Dryosaurus
* Dromaeosaurus
* Troodont
* Oviraptorid
* Archaeopteryx
* Dimorphodon
* Pteranodon
* Quetzalcoatlus
* Mosasaurus
* Elasmosaurus
* Ichthyosaurus
* Dimetrodon
* Diplocaulus
* Tiktaalik
* Eusthenopteron
* Enchodus
* Leedsichthys
* Xiphactinus
* Ammonite
* Sea Scorpion
* Trilobite

### Non-Monster Fantasy NPCs

* Sniffer
* Cavevillager
* Mystic Dinosaur
* Nessie
* Prehistoric Bee

### Monsters

* Bone Crusher
* Zombie Dinosaur
* Skeletal Dinosaur
* Paleoman
* Protocreeper
* Spider Maximus