Norris Geyser Basin may not boast Old Faithful yet it is one of the best places in Yellowstone to see hydrothermal features. Here are six reasons why: 1) Situated at the intersection of Hebgen Lake Fault, Norris-Mammoth Corridor and Yellowstone Caldera, Norris Basin is the hottest and most dynamic thermal area in Yellowstone National Park. 2) The water chemistry at Norris is more diverse than elsewhere and includes acidic geysers, a rare phenomenon. 3) The colors created by thermophiles and minerals are a true rainbow of red, brown, yellow and green. 4) Silicon salts deposited over a multitude of millennium, 115 to be precise, have bleached the basin ash-white. 5) Steamboat Geyser, the tallest, active geyser in the world, erupts regularly to 40 ft (12m) in between its unpredictable spouts 300 ft (91m) high. 6) The wooden boardwalks at Norris Geyser Basin have none of the crowds found at Old Faithful.