Without any human influence, nature has created extraordinary wonders - from majestic mountains and bubbling volcanoes to amazing plants and animals. These wonders are found across all the continents and oceans of this planet. In a tour of the seven greatest wonders of North America, we will find a giant "dinosaur graveyard" in Canada. Along the Pacific Ocean coast, we'll see the tallest trees on Earth. Some of North America's natural wonders begin underground. In Yellowstone National Park, for instance, red-hot melted rock deep inside the Earth creates giant geysers, hot springs, and mud pools on the surface. In Mexico in 1943, the same kind of melted rock burst up through a farmer's field, creating a giant volcanic mountain. What other natural wonders does North America hold? To find out, we'll explore dripping rain forests, rugged canyons, and roaring waterfalls in fascinating detail.
