What is the name of the UNESCO natural World Heritage site in Australia known for its unique limestone caves?

What is the name of the highland region in Madagascar? The Patagonian Plateau is characterized by which type of landscape? The Ethiopian Highlands are home to which ancient kingdom? What is the name of the UNESCO natural World Heritage site in China known for its towering sandstone pillars and peaks? Which UNESCO World Heritage site is home to the famous Galapagos giant tortoise? What is the name of the UNESCO World Heritage site that features the world's highest waterfall, Angel Falls? What is the name of the UNESCO World Heritage site that features the famous Victoria Falls? The Redwood National and State Parks, a UNESCO World Heritage site, is located in which US state?