Van Gogh landscape found in collector's attic AMSTERDAM'S Van Gogh Museum has unveiled a newly discovered painting by the Dutch master, a find labelled "a once-in-a-lifetime experience." Sunset At Montmajour, a large oil landscape, was unveiled to applause yesterday by the museum's director, Axel Rueger, as a "unique experience that has not happened in the history of the Van Gogh Museum." Depicting a landscape of oaks, the painting was brought to the museum from a private collection, where researchers set to work and authenticated it based on comparisons with Van Gogh's techniques and a letter he wrote in which he described the painting. It had been lying for years in the attic of a Norwegian collector who thought the painting was a fraud, after buying it in 1908. "This discovery is more or less a once-in-a-lifetime experience," said researcher Louis van Tilborgh, who helped with its authentication. "There is no doubt that it is a Van Gogh," he said. The Van Gogh Museum reopened its doors to the public in early May with a stunning new display of the some of the artist's greatest works. It is located on Amsterdam's historic Museumplein where many other Dutch art treasures like Rembrandt's Night Watch can also be found at the recently reopened Rijksmuseum. The museum features 200 works, 140 by the Dutch master himself. The newly unveiled Van Gogh will go on display on September 24.