Eureka slate quarry near Slatington, north part seen looking east, showing an eroded northward-inclined close syncline crossed by cleavage and curved joints, and overlain by glacial deposits.
Blue Mountain slate quarry near Slatington, seen looking east, showing the character of the syncline and the bending over southward of the cleavage at the surface, probably due to the friction and weight of the glacier
Quarry has been filled in and is now the site of the borough's municipal building. Acme supermarket building was to the left on top of the quarry refuse pile.