A beautifully detailed and high-resolution 6x7 medium format film photograph of the historic 1910 railroad tunnel in Auburn, California, captured on Ilford FP4 Plus. Part of the Structure collection, this analog study highlights the intricate stone masonry and arched portal of a major Sierra Nevada foothills rail corridor. The legendary fine grain and acutance of the FP4 film emphasize the mossy textures of the rock cut and the layers of modern graffiti that decorate the industrial entrance. This professional architectural study documents the human impact and century-old engineering of Northern California’s transportation history, following the leading lines of the tracks toward the distant "light at the end of the tunnel" within the Matt Haupt collection.