Vltava ( VU(U)L-tə-və, Czech: [ˈvl̩tava] is the longest river in the Czech Republic, running southeast along the Bohemian Forest and then north across Bohemia, through Český Krumlov, České Budějovice and Prague, and finally merging with the Labe at Mělník. It is commonly referred to as the "Czech national river".Both the Czech name Vltava and the German name Moldau are believed to originate from the old Germanic words *wilt ahwa 'wild water' (compare Latin aqua). In the Annales Fuldenses (872 AD) it is called Fuldaha; from 1113 AD it is attested as Wultha. In the Chronica Boemorum (1125 AD) it is attested for the first time in its Bohemian form, Wlitaua.