Attachment E.pdf

The images depict the interior of an underground tunnel or cavern, likely at the Sanford Underground Research Facility (SURF) in Lead, South Dakota. The tunnel has a rough, rock-hewn appearance with concrete-reinforced walls and multiple railway tracks running through its center. Colored markers or flags are hanging from the ceiling, and construction equipment like a forklift and traffic cones are visible. Lighting creates dramatic white highlights along the tunnel walls, illuminating the rocky surface and creating a sense of depth in the underground space. The tunnel appears to be part of a large-scale underground infrastructure project, with multiple technical elements suggesting ongoing construction or research activities.