Why does Douglass describe in detail his home and its location?

Douglass wants the reader to understand what life was like on the Great House Farm, and how it changed over the course of his time there. He remembers the songs, understands their meaning, and ties those songs to the reality of the slave's life. He also describes how the actual slave and his master might never meet, that the expanse of the farm was so great that slaves might go their entire lives without even knowing what the master looked like. Through these detailed descriptions, the reader is able to paint a picture of Douglass' life, where he lived, and how he lived.