What are some good cartoons about travel?

"From the Abyss" tells the story of the only remaining secret place in a world that has been explored in every corner - the large cave "The Abyss". The huge, bottomless vertical cave that does not know where it continues is inhabited by wonderful and strange creatures, and there are precious relics that cannot be made by modern humans. The mysterious appearance of the "Abyss" attracts people and drives them to take risks. In this way, adventurers who have challenged large caves many times have gradually gained the title of "cave explorers". Rico, an orphan who lives in the town "Os" built on the edge of the abyss, dreams of one day becoming a great cave digger like her mother and solving the mysteries of the abyss.

One day like this, while exploring the abyss, Rico picked up a robot with the appearance of a boy...