Upper Geyser Basin in Yellowstone is home to the majority of the world's active geysers. Every visitor stops for a glimpse of the Old Faithful, one of the most famous geysers in the world. The geothermal features are a treat for geologists and travelers alike. Attractions are connected with an elaborate system of boardwalks which lead visitors near colorful pools and geysers at a safe distance. Continue on the boardwalk across Firehole River up Geyser Hill where you can admire Anemone, Beehive, Lion Group and the Heart Spring. Afterwards, the path leads through the Castle-Grand Area which received its name after two prominent geysers: Castle and Grand. The boardwalk continues to the Giant-Grotto Area, Morning Glory-Riverside Area and ends up at Biscuit Basin.

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The Old Faithful and Upper Geyser Basin Biscuit Basin West Thumb Geyser Basin Thumb Paint Pots Lakeshore Geyser and Lakeside Spring Seismograph and Bluebell Pools Fishing Cone Black Pool Is Bright Blue in Color Yellowstone Lake The South Entrance Offers a Dramatic Way into Yellowstone Mammoth Hot Springs - Tips for Travelers Minerva Terrace The Colorful Palette Spring Liberty Cap Petrified Tree in Yellowstone Wildlife Watching along the Blacktail Plateau Drive Romantic Sunset at the Great Fountain Geyser Undine Falls and The Upper Falls

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