K2: Siren of the Himalayas K2: Siren of the Himalayas K2: Siren of the Himalayas is a 2012 American documentary film directed by Dave Ohlson. The film follows a group of climbers during their 2009 attempt to climb K2, chronicling the climbers' attempt to surmount the peak on the 100-year anniversary of the Duke of Abruzzi’s landmark K2 expedition in 1909. The film also delves into the history and geography of the Karakoram mountain region. The film was shot in Pakistan in the summer of 2009. Director Dave Ohlson made the trek to climb K2 with elite alpinists Gerlinde Kaltenbrunner (2012 National Geographic Explorer of
K2 incorrectly showing that K2 was taller than Mount Everest, and therefore the tallest mountain in the world. A corrected measurement was made in 1987, but by that point the claim that K2 was the tallest mountain in the world had already made it into many news reports and reference works. The mountains of K2 and Broad Peak, and the area westward to the lower reaches of Sarpo Laggo glacier consist of metamorphic rocks, known as the "K2 Gneiss" and part of the Karakoram Metamorphic Complex. The K2 Gneiss consists of a mixture of orthogneiss and biotite-rich paragneiss. On the south