 Complete the following phrase:  The Tacen Whitewater Course is a venue for canoe and kayak slalom competition in Tacen, Slovenia, a suburb of Ljubljana. Located on the Sava River, eight kilometers northwest of the city center, it is known locally as Kayak Canoe Club Tacen . The course played an important role in development of the sport during the past six decades. In 1939, when its first competition was held, it was a natural rapid at the base of a dam in the Sava River. In 1990, after many upgrades, it was given a concrete channel and the features of a modern Olympic-style slalom course. The course now starts in the lake behind the dam, and the spillway is the first drop. Tacen hosts a major international competition almost every year, examples being the 