Beneath Hyrule Castle

is a location in, serving as both the first and final area of the game. It is a forbidden zone that descends into the very deepest part of TotK:'s Series:. A TotK: in the TotK: indicates that the area beneath the castle was originally accessible through the passage. As the entrance evidently collapsed during the Series:, it can now only be reached through the TotK:.

Prologue
After TotK: started to seep out from below TotK: and made nearby people fall ill, TotK: tasked TotK: and TotK: with investigating the source, which originated in a tunnel system deep TotK:. Entry to the tunnels below the castle is forbidden to all, including the Series:, though the reason why has been lost to history.

Upon arrival to the area known as the TotK:, TotK: notes that the concentration of Series: found TotK: is relatively mild in spite of the effects it has on the people of the TotK:. As they travel deeper, the TotK: begins to glow, reacting to something dangerous in the area. While investigating, TotK: discovers signs of NaN Zonai Ruins belonging to the ancient TotK: people and excitedly documents her findings with the TotK:. She eventually comes across a series of murals in the TotK:, which she deduces must be about the origin of TotK: and the TotK: that followed. Once again, she uses the TotK: to take NaN Pictures of their discoveries. A series of murals to the right of the central relief are concealed by rocks, and so they cannot be viewed.

As they descend further down TotK:, the TotK: grows thicker. Eventually, they enter the TotK:, where they stumble upon the mummified body of TotK: held in place by a TotK:. This TotK: releases its grip on the body when TotK: approaches, causing the TotK: on the back of its hand to fall to TotK:'s feet. When she picks it up, TotK: awakens and attacks with tendrils of TotK:. While defending her against the TotK:, TotK:'s TotK: is heavily damaged and breaks. Before they can muster a counterattack against the TotK:, he launches a burst of TotK: upwards, tearing the earth surrounding most of TotK: and sending it into the TotK:. This also causes the ground beneath the three of them to give way, sending them all into freefall. The TotK: in TotK:'s possession begins to glow, causing her to disappear. TotK: is saved by the TotK:, which TotK: him away to the TotK: atop the TotK:.

The Imprisoning War
TotK: is seen again in "TotK:" TotK:. In the distant past, TotK: leads the TotK: in a battle against TotK: to bring an end to the TotK:. With no other choice but to sacrifice himself, TotK: relies on the TotK: to distract the TotK: long enough to grab hold of his chest and bind his heart, simultaneously draining his TotK: in the process. This sacrifice traps both of them in place for millennia while TotK: waits for TotK: and TotK: to arrive in the TotK:, where they can destroy TotK: with the TotK:.

The room in which this occurs later comes to be known as the TotK:. The entire area beneath the castle is sealed off throughout the ages with access forbidden to all, including the Series:.

Entrance to Beneath Hyrule Castle
TotK: is revisited for the final Series:, "TotK:". TotK: is convalescing TotK: in the TotK:, and can be faced here at any point after returning to the surface from the TotK:. However, TotK: will only learn of the TotK:'s location after defeating TotK: at the TotK: during the "TotK:" TotK:.

The destruction wrought by the Series: has collapsed the entrance in the TotK:, making it impassable. The only way to access the location is through the TotK: that has opened directly below the castle. A cave at the base of the chasm known as TotK: leads to the ruins and tunnels that make up the passage to the TotK:.

Themes and Navigation
The TotK: appears to have had a profound impact on the area; many passageways are blocked, TotK:-built structures have entered states of extreme disrepair, and an extremely high concentration of Series: is prevalent all throughout. The TotK: has corrupted the many Series: that now inhabit the passage, turning the area Series: into a long and dangerous gauntlet to its deepest depths.

As TotK: gets close to the TotK:, any NaN Sage Avatars he has unlocked will disappear, being unable to reach him. In the central chamber of the TotK:, the rocks covering a series of murals can be blown apart to reveal three additional depictions: the final battle of the TotK: between the NaN Sages and TotK:, TotK: with the TotK:, and her transformation into the TotK:. A passage descends further to TotK:, where the ground has since given way leading to TotK:. A stone platform reaches over the void, and TotK: can dive from it to begin the final confrontation.

Rising out of the void is an enormous tree-like structure made out of NaN Suspicious-Looking Red and Black Roots. The front of the tree bears a demonic face, with a mouth covered in covered in brightly glowing, pulsing, TotK:. When Link reaches a platform at the base, an all-out war will break out with NaN Monsters forming the TotK: being summoned in several waves. If TotK: has acquired the vows of any NaN Sages, they will physically appear in-person to assist him in the battle. Following the battle, the mouth will open to reveal a passageway and TotK:, TotK:, TotK:, TotK:, TotK:, and TotK: are summoned to confront TotK:. If they have not been defeated during their respective NaN Main Quests, TotK: will have to face the undefeated NaN Bosss in succession before being able to proceed. If all NaN Bosss have been previously defeated, the NaN Sages will urge TotK: to proceed onward while each taking on a TotK:, resulting in the passage caving in behind him. At this point, the only way to move forward is to confront TotK: in the very deepest of the TotK:, TotK:.

Minor NaN Enemies
All enemies in this location after the TotK: are TotK:.

Demon King's Army
Bosses that Link has not yet defeated will be challenged here in succession following the previous waves.

Trivia

 * TotK: is the deepest point in TotK:, with the Z-axis coordinates for TotK: being -2500.
 * The music will change once TotK: reaches TotK:, and its intensity will increase the closer TotK: is in distance to TotK:.
 * TotK: can only be visited during the final confrontation, though it is not possible to save the game, leave, or teleport away once this has begun.