Rambynas, a hill known as sacred among locals and popular with Prussian Lituanians, sits on the bank of which river?
Rambynas: Rambynas is a hill on the right bank of the Neman River in Rambynas Regional Park, Pagėgiai Municipality, western Lithuania. Rambynas:  Rambynas became popular with Prussian Lithuanians at the end of the 19th century who organized various events, most notably celebrations of the Saint Jonas' Festivals or Rasos (summer solstice), on the hill. Prussian Lithuanians: The Prussian Lithuanians or Lietuvininkai (singular: "Lietuvininkas", plural: "Lietuvininkai") are a Western Lithuanian ethnic group, originally Lithuanian language speakers who inhabited a territory in East Prussia called Prussian Lithuania or Lithuania Minor, (Lithuanian: "Prūsų Lietuva", "Mažoji Lietuva" , German: "Preußisch-Litauen", "Kleinlitauen" ) in contrast to the Grand Duchy of Lithuania and later the Republic of Lithuania (Lithuania Major or Proper).
Neman River