Made in Abyss: The Capital of the Unreturned
This is the sixth layer of the Abyss, from Made in Abyss, a manga by Akihito Tsukushi. Its name is the Capital of the Unreturned. A person who goes up from this layer dies or stops being human.
Riko, Reg and Nanachi look at the ruins of the golden city. Its towers lean, lie on their sides and hang point down. At the right is the village of the hollows, a living thing as big as a hill. The painting has 13,989 brush strokes.