The oldest flute ever discovered may be a fragment of the femur of a juvenile cave bear, with two to four holes, found at Divje Babe in Slovenia and dated to about 43,000 years ago. However, this has been disputed. In 2008 another flute dated back to at least 35,000 years ago was discovered in Hohle Fels cave near Ulm, Germany. The five-holed flute has a V-shaped mouthpiece and is made from a vulture wing bone. The researchers involved in the discovery officially published their findings in the journal Nature, in August 2009. The discovery was also the oldest confirmed find of any musical instrument in history, until a redating of flutes found in Geibenklosterle cave revealed them to be even older with an age of 42,000 to 43,000 years.