Dozens of hikers became ill during trips to waterfalls near the Grand Canyon

Dozens of hikers say they fell ill during trips to a popular Arizona tourist destination that features towering blue-green waterfalls deep in a gorge neighboring Grand Canyon National Park. Original article: https://www.reviewjournal.com/news/nation-and-world/dozens-of-hikers-became-ill-during-trips-to-waterfalls-near-the-grand-canyon-3068610/