Stalagmites and stalagtites in Perama cave
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Stalagmites and stalagtites in Perama cave

by Konstantinos Kourtidis, Demokritus University of Thrace, Xanthi, Greece

The Perama cave, near Ioannina, Greece. The cave is big, and about 1100 m of the cave are open for the public and can be visited. The cave was formed about 1.5 million years BP.