Rock Bottom (town)

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Rock Bottom is a town in a deep sea trench located beneath Bikini Bottom, seen in the episode of the same name. The road between the two towns is so perfectly vertical, so that it can only be accessed by bus. Everything is pitch black except for a few street lights, and signs are written in a strange, unreadable language. The residents of Rock Bottom are strange and monsterous, being based on real-life creatures found in the deepest areas of the ocean. They do speak english, except they blow a raspberry in between every one to four syllables, or at the start or end of a sentence.

The entry area of Rock Bottom contains a "Kandy" machine as well as restrooms, although foreigners cannot tell which is the men's room and which the women's due to the weird symbols used to mark them, and are unable to determine the genders of the inhabitants. Rock Bottom also has a major bus station, although the bus is extremely hard to catch. There is also an information booth, with extremely long waiting lines.

Although it makes only one appearance in the show, Rock Bottom is featured in several Spongebob video games:

In Spongebob Squarepants: Employee of the Month, Rock Bottom is the location of the game's third chapter. Marlin's Cave is the residence of the weather magician of the sea which is difficult to access.

In Battle for Bikini Bottom, the Rock Bottom Museum is shown. It features a lot of art work and has an advanced security system, and Barnacle Boy works as a security guard there. The Trench of Advanced Darkness is a trench that is lower than the city itself.