末日山, also known as Mount Doom, is a fictional volcano located in the Mordor region of J.R.R. Tolkien's Middle-earth. It is a significant location in the Lord of the Rings series, where the One Ring was forged and ultimately destroyed. The mountain is characterized by its fiery eruptions and dark, ominous landscape. The mountain serves as a symbol of power and corruption, representing the struggle between good and evil. The journey to 末日山 is perilous, as characters like Frodo Baggins and Samwise Gamgee face numerous challenges while trying to destroy the One Ring. Its destruction marks a pivotal moment in the story, leading to the downfall of Sauron.