Minecraft wiki entry for The_Nether, associated text: The first screenshot released by Notch showing what the Nether would look like.
The first screenshot released by Jeb in September 2011 of nether fortresses.
Brightened version of the previous screenshot.
Another early view of a nether fortress Jeb released in September 2011.
Brightened.
The Nether as it appeared prior to Beta 1.8.
View of a nether fortress.
View of a nether fortress in basalt deltas
View of nether fortresses with a blaze spawner.
A large, spreading stream of lava in the Nether.
Ghasts are not harmed by lava or fire.
Bedrock naturally exposed in the Nether.
Using a map in the Nether causes the player's position indicator to rotate, but any markers do not.
A hidden lava source block uncovered.
Mushrooms naturally generated above the Nether.
The magma block naturally generated in the Nether.
A Nether ravine.
Gravel in the Nether.
The Nether in the Overworld, generated using Buffet.
The junction of all biomes in the Nether.
The basalt deltas, one of the five new biomes in the Nether.
The Nether ceiling, which is a vast endless plane of bedrock with a red sky of the void.
View of a soul sand valley.
Brightened version of the previous screenshot.
View of the crimson forest.
Brightened.
View of the basalt deltas.
Brightened.
View of the warped forest.
Brightened.
An intersection of four different nether biomes.