Both sources are located in the Arequipa Region. The Chivay obsidian source is linked to the Colca Canyon, and the Alca obsidian source is located at the Cotahuasi Valley.
The Arequipa Region serves as a common location for both sources. Specifically, the Chivay obsidian source is situated near the Colca Canyon, and the Alca obsidian source is found in the Cotahuasi Valley.