A striking and high-resolution black and white 6x7 medium format film photograph of a massive circular industrial ruin in American Canyon, California. Likely captured on Ilford Delta 100, this entry in the Structure collection features a monolithic conical building—part of the historic Basalt Rock Company site—blanketed in complex graffiti and urban street art. The monochrome palette emphasizes the geometric symmetry and weathered materiality of the decaying Napa County landmark, documenting the human impact and cultural reclamation of abandoned industrial spaces in Northern California. This professional analog study captures the imposing scale and desolate beauty of the "Hut," highlighting the intersection of mid-century engineering and modern vandalism within the Matt Haupt collection.