The Texas blackland prairie
soils are a black, alkaline, calcium-saturated clay, sometimes referred
to as "gumbo," which developed from the Austin chalk formation
and the volcanic ash that adulterated those carbonates as they were
deposited in the shallow Cretaceous-age seas.
Murals line Mary Cliff road on the eastern edge of Twelve Hills (the
western edge of Rosemont Elementary)
"When one tugs at a single thing in nature, he finds it attached to the rest of the world." - John Muir