Here's why:
* Appositive Phrases: Appositive phrases are phrases that rename or explain a noun or pronoun that comes before them. They are set off by commas.
* Identifying the Noun: The noun being renamed is "Strobsy."
* The Renaming Phrase: The phrase "a little town in the middle of nowhere" tells us more about what Strobsy is.
Therefore, "a little town in the middle of nowhere" is the appositive phrase in the sentence.