adidas ROCKSTARS heats up the Porsche-Arena in Stuttgart

After last year's successful event premiere in Austria's Ötztal valley, adidas ROCKSTARS -- an invitational contest for the world's best bouldering athletes -- is now hosted by Stuttgart, the capital of the German federal state of Baden-Württemberg. The second edition of the international climbing event takes place in the famous Porsche-Arena on the 10th and 11th of August, 2012.