Duat

The Duat is the spirit world of gods and magic. It exists beneath the surface of the "waking world"( the mortal realm) like lava beneath the earth's crust and by submerging just under the surface, one may travel great distances in a short amount of time. A magician enters the shallowest portion of the Duat when they sleep. When gods are "banished" or defeated/killed in the mortal world, they return to the Duat,albeit much weaker and deeper, until they have enough strength to escape. Items may also be stored in the Duat until they are desired again. ba is shown to travel into the Duat during dreams.

The Duat is broken into many different layers including the Abyss(presumebly the deepest layer), the River of Night, the Land of the Dead, and the Land of Demons.

River of Night
A river that is every river and no river. It exists as a shadow or counterpart of all the rivers in the world and is filled with burning water. It traverses the Duat and has many branches and tributaries as it represents every river on Earth. In ancient times, Ra would travel through the river on his sunboat and bring light and warmth to the souls that could not find their way to the Hall of Judgment. It flows through the Lake of Fire and the Twelve Houses.

Land of the Dead
The Land of the Dead is located within the Duat. Anubis, Osiris, and Ammit the Devourer reside here with all the dead and it is protected by Shezmu. The Land of the Dead can be navigated by using Spells of Coming Forth by Day (also known as The Book of the Dead). It includes the First Cataract, the Lake of Fire, the Hall of Judgment, and the Fifth, Sixth, and Seventh Houses.

First Cataract
The entrance to the Land of the Dead, it is marked by large, jagged rocks in the river. It is guarded by Shezmu and those who wish to pass must speak his secret name.

Lake of Fire
A steaming lake of rapids, resembling the surface of the sun. It smells of petrol and rotted meat. There are two enterances, the Gates of the West and the waterfall. The Fourth House lies on its banks. It was here where Ra was renewed.

Gates of the West
The gate that Ra's sunboat would pass through, renewing itself in the Lake of Fire before passing through the Gates of the East and beginning a new day.

Hall of Judgment
A temple that sits on an island in the center of the lake of fire, this is the place that the souls of the dead seek. The temple contains Osiris's throne and a set of scales on which the feather of truth and the deceased's heart is weighed. If the heart is unworthy, it is eaten by Ammit the Devourer. If the heart is worthy, the soul may pass to the Seventh House, Aaru (Paradise). The Hall fell into disrepair during Osiris's absence, despite Anubis's efforts to keep it functional. It is often linked to a real-world location that its current owner holds a love for. In Anubis's case, it is a New Orleans graveyard. For Julius. it is his family home in Los Angeles.

First House
Where Ra begins his nightly journey. Carter and Sadie confronted Nekhbet and Babi and the sun boat was docked here. Can only be entered in the First Hour of the Night (sunset).

Second and Third Houses
Nothing much happens here. The river is dark and has minimal visibility.

Fourth House
Also known as the House of Rest and Sunny Acres. Under managment of Tawaret and crew of shabti and servant lights. Lies on banks of the Lake of Fire. Guarded by Khnum.

Fifth and Sixith Houses
This is where the Lost and Confused reside, spirits who never found their way to the Hall of Judgement. They rejoice in the light of Ra. A few serpents live in the water here.

Seventh House
Also known as the House of Osiris and Aaru (Paradise). Ra's pit stop, where he ate and rested with his host, Osiris. This is where the worthy souls enter and reside. Viewed a little different by every soul.

Eighth House
Also known as the House of Challenges. To Carter and Sadie, it wasn't very challenging since they had lost Bes to Khonsu and were empowered by their rage. Can only be entered in the Eighth Hour of the Night.

Ninth, Tenth, and Eleventh Houses
Nothing much is mentioned about these houses. Carter says they passed in a blur.

Twelveth House
Final House. Statue of Nut at entrance. Can only be exited at dawn. Apophis made the river lead to his prison instead of out to the mortal world. The original route was rixed when Apophis was execrated. This is when Ra came out it revitalizes magicians and saved the Brooklyn House.