After exploring Antarctica on select itineraries with Lindblad Expeditions-National Geographic, travelers can opt for a post-voyage extension to Iguazú Falls National Park to witness one of the most breathtaking waterfalls in the world and its surrounding rainforest. “Iguazú Falls overwhelms the senses,” says naturalist Chelsea Korbulic of this natural wonder which features more than 200 cascades spread over nearly two miles of the Iguazú River. In this Expedition Spotlight, she reveals what’s in store on this thrilling four-day adventure, from viewing Iguazú Falls from above on suspended walking paths, to an invigorating jet boat ride that takes you to its massive base.