However, remaining populations in this area are still strong and reproduce freely. Bog pondweed is also a Red List species in Holland. Bog pondweed is not in general cultivation, although it is easy to grow. Its preference for shallow water makes it very suitable for a garden pond, but it would probably be difficult to establish in high nutrient, hard water areas. Cornelis Bisschop  Cornelis Bisschop (12 February 1630 – 21 January 1674), was a Dutch Golden Age painter. In ca. 1650 he was a student of Ferdinand Bol in Amsterdam. In 1653 he was back in Dordrecht, where he got married. According to Houbraken he was the first to paint carved trompe l'oeil wooden panels in such an ingenious way that they became quite popular. He painted historical allegories, portraits, still lifes, and genre-works. He was asked to paint for the Danish court, but he died unexpectedly, leaving his wife and eleven children. Of these children, two sons Abraham and Jacobus and three daughters became painters. These had been his students along with Margaretha van Godewijk who wrote an emblem about his self-portrait with a curtain, which illustrates the legend of Zeuxis. Rachid Benmahmoud  Rachid Benmahmoud (born 14 September 1971 in Rabat) is a Moroccan former footballer and current assistant coach of Al-Ain FC. Harz Run  The Harz Run () is a fun run and walking event in the Harz mountains of Germany that has been organised since the 1970s by the Wernigerode Skiing Club ("Skiklub Wernigerode 1911") and takes place on the last Saturday of April. The main run is an ultra marathon which is long and crosses the Harz between Wernigerode and Nordhausen in a north-south direction. There is also a 25 km route from Wernigerode to Benneckenstein and a 28 km course from Benneckenstein to Nordhausen. From its start on the edge of the town of Wernigerode it initially climbs the Hilmersberg and then continues to the Zillierbach Reservoir. After 11.5 km the first drink stop is reached at Neue Hütte. The route forks at Lange at the 20 km point. Whilst the 25 km runners turn off right to Benneckenstein, the ultra marathon runners run straight ahead in a southerly direction.