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Columnar jointing in Cenozoic basalt flow at the Kunashir Island, the southernmost of the Kurile Islands in the North Pacific. Slides were taken in 1976. Columnar joints in the Cenozoic basalt flow at the Cape Stolbchatyi (Cape Columnar), 3 km from the Tret'yakovo Village, west coast of the Kunashir Island, Kurile Islands, Russia. GPS 44o01'32.18"N 145o40'34.31"E Columnar jointing results when basalt cools from the outside in causing shrinkage and the development hexagonal joint structure. Photo by Dr. Energina Safonova, Russian Academy of Sciences.