21. Travelers who throng to the Upper Geyser Basin often miss the Biscuit Basin, a short drive away. 22. It is home to half of the world's total number of geysers in its nine geyser basins . 23. "' Turquoise Pool "'is a hot spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming. 24. "' Opal Pool "'is a hot spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming. 25. "' Fan and Mortar Geysers "'are two geysers in the Upper Geyser Basin in Yellowstone National Park. 26. Here, the road meets the Gibbon River and follows it into the Gibbon Geyser Basin and Gibbon Canyon. 27. Three mountain peaks, including Mount Norris, one geyser basin , and one pass in Yellowstone are named after Norris. 28. Visitors to the Lower Geyser Basin are urged to stay on a half-mile boardwalk over the treacherous terrain. 29. From Obsidian Canyon, the road continues south into the Norris Valley and the Norris Geyser Basin ( ). 30. The basin is a backcountry geyser basin located southeast of Old Faithful Geyser and the Upper Geyser Basin .
