During the summer, visit Yellowstone's most popular sights during the quieter times of the day, in the morning, or late afternoon and evening. You'll streamline your visits (and see even more) if you take advantage of the park's interpretive sightseeing tours. And though many of the ever-popular sights that ...

Yellowstone has the largest and most varied collection of hydrothermal features on Earth. Geysers, hot springs, mud pots and fumaroles bubble, gurgle, hiss and spout throughout the area. The presence of so many thermal features and earth tremors indicates that molten rock lies just beneath the Earth's surface. Hydrothermal features ...

Various interpretive sightseeing tours and activities are offered including 14 tours in refurbished Old Yellow Buses. For reservations, contact Xanterra Parks & Resorts at (307) 344-7311 or (866) GEYSERLAND, check at any lodging front desks or activities desks in the park or visit YellowstoneNationalParkLodges.com for additional information. Evening Wildlife Encounters: ...