Which river flows through the famous Plitvice Lakes National Park in Croatia?

Which island nation is home to the famous volcano Mount Yasur? What is the name of the famous cave system located in Kentucky, USA? What is the name of the famous delta located in Egypt? What is the name of the famous cave system located in Vietnam? Which river flows through the famous Manaus city in Brazil? Which island is home to the famous Mount Teide volcano? Tirana is the capital of which country? Vienna is the capital of which country?