The Pittsburgh River
(2.5 Million Years Ago)
Sandblasted & Stained Concrete
Detail of Sandblasted Text - Photo by Sean Carrol
Stainless Steel Info Placard
Photo by Sean Carrol
The Pittsburgh River
(2.5 Million Years Ago)
Sandblasted & Stained Concrete
Detail of Sandblasted Text - Photo by Sean Carrol
Stainless Steel Info Placard
Photo by Sean Carrol