Pennsylvania Geological Survey - Historical Photographs

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About This Collection

This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.

Interstate Highway

Interstate 81 bridge construction over the Swatara River, Swatara Gap.

Interstate 81, view of Swatara Gap at Lickdale

Interstate Highway

Interstate 81, view of Swatara Gap at Lickdale.

Sinkhole, Palmyra Borough

Sinkholes

Sinkhole, Palmyra Borough, Cherry Street, east end of town.

Sinkhole, Palmyra Borough

Sinkholes

Sinkhole, Palmyra Borough, Cherry Street, east end of town.

Sinkhole, Palmyra Borough

Sinkholes

Sinkhole, Palmyra Borough, Cherry Street, east end of town; sink filled in, outline shows from curb to curb.

Slope failure, Triassic sandstone and conglomerate

Engineering Geology

Slope failure, Triassic sandstone and conglomerate, along Rt. 322 east of Cornwall.

Slope failure, Triassic sandstone and conglomerate

Engineering Geology

Slope failure, Triassic sandstone and conglomerate, along Rt. 322 east of Cornwall.

Slope failure, Triassic sandstone and conglomerate

Engineering Geology

Slope failure, Triassic sandstone and conglomerate, along Rt. 322 east of Cornwall.

Slope failure, Triassic sandstone and conglomerate

Engineering Geology

Slope failure, Triassic sandstone and conglomerate, along Rt. 322 east of Cornwall.

Slope failure,Triassic sandstone and conglomerate

Engineering Geology

Slope failure,Triassic sandstone and conglomerate, along Rt. 322 south of Cornwall.

Structure

Unconformity, Martinsburg Formation and Tuscarora quartzite along Interstate 81, north of Lickdale (Swatara Gap)

Structure

Unconformity, Martinsburg Formation and Tuscarora quartzite along Interstate 81, north of Lickdale (Swatara Gap)