Country State Classification Source WallNo Centennial Commercial Location surroundPic
United States Pennsylvania Sandstone Center Bridge 6RB4 25839 y Front Face (South) Dscf0105.jpg
No 6RB4 is:

Description

gray
rust-spotted
coarse grain
compact
Triassic


Picture of the Archive Stone:
/archive/front/6rb4.jpg
Actual Picture from the Stone Wall: /mid2000/6rb4.jpg (63575 bytes)