View of the Senftenberg greywacke quarrying area, ca. 1935.

Koschenberg quarry, Senftenberg, Oberspreewald-Lausitz, Brandenburg, Germany

The Koschenberg quarry general view, ca. 1935. Vintage artist picture postcard, painting by Joachim Banski, Calau. G. Grundmann collection.

View of the Senftenberg greywacke quarrying area, in 1930.

Koschenberg quarry, Senftenberg, Oberspreewald-Lausitz, Brandenburg, Germany

The Koschenberg quarry rock crusher, in 1930. Vintage picture postcard, photographer E. Weißgärber, Senftenberg. The card was sent on 22 September 1930 from Senftenberg to Marburg. G. Grundmann collection.

Aerial view of the Senftenberg greywacke quarrying area, in 1931.

Koschenberg quarry, Senftenberg, Oberspreewald-Lausitz, Brandenburg, Germany

The Koschenberg quarry general view, in 1931. Vintage real photo postcard, photographer Walter Hahn, Dresden. The card was sent on 10 August 1931 from Senftenberg to Berlin. G. Grundmann collection.

View of the Senftenberg greywacke quarrying area, ca. 1935.

Koschenberg quarry, Senftenberg, Oberspreewald-Lausitz, Brandenburg, Germany

The Koschenberg quarry general view, ca. 1935. Vintage artist picture postcard, painting by Joachim Banski, Calau. G. Grundmann collection.

View of the Senftenberg greywacke quarrying area, in 1930.

Koschenberg quarry, Senftenberg, Oberspreewald-Lausitz, Brandenburg, Germany

Aerial view of the Senftenberg greywacke quarrying area, in 1931.

Koschenberg quarry, Senftenberg, Oberspreewald-Lausitz, Brandenburg, Germany

The Koschenberg quarry general view, in 1931. Vintage real photo postcard, photographer Walter Hahn, Dresden. The card was sent on 10 August 1931 from Senftenberg to Berlin. G. Grundmann collection.