d) Havasu Falls

Havasu Falls, a natural wonder in Arizona, is known for its striking blue-green waters. Located within the Havasupai tribal lands in the Grand Canyon, this waterfall is a hidden oasis amidst the desert landscape. The high mineral content of the water, especially calcium carbonate, gives it a vibrant turquoise color, contrasting beautifully with the red canyon walls. Accessible through a hike from Supai village, Havasu Falls is a popular destination for hikers and nature lovers seeking a serene and picturesque natural setting.