Steel Roofing

While installing a window well next to the house i hit a small piece of metal, i thought "No Problem" and tried to pull it out, it wouldn't budge. More aggressive digging produced this piece of roofing material, i know it isn't from this house as it's 40 years old and has always had asphalt shingles.

Most likely from a barn or one of the chicken coops that used to be on the property.

Done