Country State Classification Source WallNo Centennial Commercial Location surroundPic
United States Pennsylvania Sandstone Columbia 6RA2 26330 y Front Face (South) Dscf0104.jpg
No 6RA2 is:

Description

blue-drab
fine grain
compact
argillaceous
Lower Silurian


Picture of the Archive Stone:
/archive/front/6ra2.jpg
Actual Picture from the Stone Wall: /mid2000/6ra2.jpg (63575 bytes)