Danube-Gunz interglacial age of about 900,000 to 940,000 years. There are however indications that the Uhlenberg Profile may still be placed within the Pliocene, and it would thus not correlate with the Danube-Gunz interglacial. Also uncertain is its association with the North German classification because of its position in the underlying stratum of the Gunz it could correspond to the Bavelian or the Waalian interglacial. The Danube-Gunz corresponds at least in part to the Swiss Deckenschotter glaciations. Danube-Gunz interglacial The Danube-Gunz interglacial (), Danube-Gunz warm period ("Donau-Günz-Warmzeit"), often just Danube-Gunz, or also Uhlenberg interglacial ("Uhlenberg-Warmzeit") is the second-oldest named warm period of
Waves of the Danube known as "Danube Waves Waltz." The melody of "Waves of the Danube" was used in what is regarded as Korea's first popular song, "In Praise of Death" by Yun Sim-deok recorded in 1926. The song was recorded in Osaka, where she met and fell in love with a Korean married man. The two boarded a steamship returning to Korea, but ended their lives by jumping into the sea. "Waves of the Danube" became known in the United States only half a century later. Al Jolson and Saul Chaplin published it in 1946 under the name of "The Anniversary Song" ("Oh,