Where is the Location of actual quarry in Fountainhead?

The novel "Fountainhead" by Ayn Rand does not specify the exact location of the quarry where Howard Roark works. It is simply mentioned as being "in the hills," which is a vague description.

The novel is not grounded in a specific real-world location, but rather uses a fictionalized setting to explore the themes of individualism, creativity, and the struggle between the artist and society.

Therefore, the actual quarry in Fountainhead exists only within the fictional world of the novel.