The Lord of the Rings books at least provided some explanation for why Mount Doom was so accessible to Frodo and Sam. Aragorn had purposely used the palantir to reveal himself to Sauron.

In conversation with Aragorn and Gandalf, he proudly displays Frodo's Elvish chainmail shirt ... see this "malevolent" character and took to X, previously known as Twitter, to share their thoughts.

Frodo and Sam discover they are being followed by the mysterious Gollum. Aragorn, the Elf archer Legolas, and Gimli the Dwarf encounter the besieged Rohan kingdom, whose once great King Theoden ...

Frodo must make an epic quest to Mount Doom in order to destroy it. However, he does not go alone. He is joined by Gandalf, Legolas the elf, Gimli the Dwarf, Aragorn, Boromir, and his three Hobbit ...