Country State Classification Source WallNo Centennial Commercial Location surroundPic
United States Pennsylvania Sandstone Hummelstown 6RA3 ? y Front Face (South) Dscf0104.jpg
No 6RA3 is:

Description

brownish-purple
coarse grain
porous
Triassic


Picture of the Archive Stone:
/archive/front/6ra3.jpg
Actual Picture from the Stone Wall: /mid2000/6ra3.jpg (63575 bytes)