Country State Classification Source WallNo Centennial Commercial Location surroundPic
United States Pennsylvania Limestone Hummelstown 7La12 3788?3? n Front Face (South) Dscf0131.jpg
No 7LA12 is:

Description

blue
fine grain
compact
Lower Silurian


Picture of the Archive Stone:
/archive/front/7la12.jpg
Actual Picture from the Stone Wall: /mid2000/7la12.jpg (63575 bytes)