Country State Classification Source WallNo Centennial Commercial Location surroundPic
United States Iowa Limestone Sigourney Station, Keokuk Co. 13RA20 25625 y Front Face (South) Dscf0466.jpg
No 13RA20 is:

Description
light gray
fine grain
compact
Lower carboniferous


Picture of the Archive Stone:
/archive/front/13ra20.jpg		 Actual Picture from the Stone Wall: /mid2000/13ra20.jpg (63575 bytes)