国家地理:Secret Yellowstone 黄石国家公园（在线收听） |
| Yellowstone National Park is a giant swatch of terrain. Ninety percent of it barely touched, wilderness. Hidden within, one of the most remote places in "the Lower 48". Right here, no road in any direction for 22 miles. It's within the largest ecosystem of its type in the world. Hidden valleys never fully met. A canyon, 20 miles long. Sweeping grasslands, more than enough to sustain the Yellowstone's 4,000 bison. 17 rivers dissect the wilderness. Wetlands cover more than 10% of the backcountry, from the largest high altitude lake on the continent to at least 23 peaks over 10,000 feet. This is Yellowstone, altogether, two million acres. Few realize it's big enough to be its own state, bigger than Rhode Island and Delaware combined. Yet for all you can see, the real story behind Yellowstone is in what you can't see. Right here, just underground lies one of the world's largest volcanoes. It reveals itself at the surface in menacing waves, with mud pots that belch toxic gas and fumaroles that hiss with the acid vapor. Super-heated pools of water, steam vents and geysers attract visitors galore, some three million tourists a year. They come and go. Few understand that Old Faithful won't be faithful forever. swatch: (n.) A sample strip cut from a piece of material. 样本 backcountry: (n.) A sparsely inhabited rural region. 边远地区 belch: (n.) To eject violently. 猛烈喷射 fumarole: (n.) A hole in a volcanic area from which hot smoke and gases escape. 喷气孔火 galore: (a.) In great numbers; in abundance 大量的，丰富的 |
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