Big Cub Geyser

Ear Spring is a hot spring in the Upper Geyser Basin of Yellowstone National Park in the United States. Located close to Old Faithful, on rare occasions Ear Spring will erupt as a geyser, and can shoot rocks and debris as well as water more than 25 feet (7.6 m) for a few minutes. On September 15, 2018, Ear Spring was seen on the National Park Service webcam at Old Faithful erupting for a minute and reached heights of 20 to 30 ft (6.1 to 9.1 m). This was the largest eruption the pool may have had since 1957. The eruption tossed small rocks out and the heated water killed the surrounding bacterial mats that normally thrive in less heated conditions. Likely related to the eruption of Ear Spring, a new thermal feature opened up under the pedestrian boardwalk near Pump Geyser which resulted in the National Park Service temporarily closing off the boardwalk. This new thermal feature was spouting water the night of September 18-19, 2018. Additionally, Doublet Pool and North Goggles Geyser have both been more active in the period immediately after the rare eruption of Ear Spring.

Doublet Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park, Wyoming. Doublet Pool is 8 feet (2.4 m) deep and its temperature is approximately 194.4 °F (90.2 °C). Its scalloped edge is made of geyserite. Eruptions can occur in Doublet Pool, but only last up to 8 minutes. The pool on the right pulses over the vents about every two hours. Occasionally there will be vibrations, surface wave motion, and thumping; these effects are caused by collapsing gas and steam bubbles deep underground.

Beehive Geyser is a geyser in the Upper Geyser Basin of Yellowstone National Park in the United States. The 4-foot (1.2 m) tall cone resembles a straw beehive. Beehive's Indicator is a small, jagged cone-type geyser located about 10 feet (3.0 m) from Beehive.

Aurum Geyser is a geyser in the Upper Geyser Basin of Yellowstone National Park in the United States, on Geyser Hill. Aurum can, at times, be very predictable. Other times it can be very erratic. Observations have led to the theory that Aurum's activity is linked to the meadow behind the geyser. When the meadow is wet, activity is regular with 3 to 4 hours between eruptions. When the meadow dries in late summer and early fall, the interval becomes less predictable ranging from 4 to 7 hours. Aurum also participates in the weekly Geyser Hill wave. It decreases and increases its interval at regular times during a week.Eruptions last about 90 seconds and range in height from 15 feet (4.6 m) to 25 feet (7.6 m). An eruption is usually preceded by bubbling in two small vents nearby. On rare occasions, an eruption will be followed by a second smaller eruption 5 to 10 minutes after the primary eruption.

Anemone Geyser is a geyser in the Upper Geyser Basin of Yellowstone National Park in the United States. Anemone is actually two closely related geysers. The larger of the two is known as Big or North Anemone while the smaller is known as Little or South Anemone. The two geysers were named after the anemone flower by the Hague Party in 1904. Both vents have a pale yellow color and shape similar to the flower.

Chinese Spring (formerly called Chinaman Spring) is a hot spring in Yellowstone National Park, Teton County, Wyoming, in the United States.Chinese Spring was named for a Chinese immigrant who often washed laundry in the spring in the 1850s.

Hamilton's Stores were concessioners in Yellowstone National Park from 1915 to 2002. The stores were founded by Winnipeg native Charles Hamilton, who arrived in Yellowstone in 1905, aged 21, to work for the Yellowstone Park Association. The stores provided tourists with food, souvenirs, and sundries at the major attractions along Yellowstone's Grand Loop Road. Several buildings constructed for Hamilton are significant examples of the National Park Service Rustic style of architecture and have assumed prominence as attractions in their own right. Most are included as contributing structures in National Register of Historic Places historic districts.

Turban Geyser is a geyser in the Upper Geyser Basin of Yellowstone National Park in the United States. Turban Geyser belongs to the Grand Group (or Grand Geyser Complex), and its eruption is tied to Grand Geyser. In the hours prior to Grand's eruption, Turban will have five-minute eruptions every 15–25 minutes. These eruptions measure 5–10 feet (2–3 m) in height. During Grand's eruption, Turban erupts continuously reaching up to 20 feet (6 m). Following an eruption of Grand, Turban will continue to erupt intermittently for an hour or so along with Vent Geyser. At times, it is not possible to see Turban erupting through the steam and spray of Grand Geyser. Turban Geyser was named for the similarity in appearance of the sinter deposits in its basin to the turban headpiece. Dr. A.C. Peale named the geyser in 1872.

The Old Faithful Inn is a hotel located in Yellowstone National Park, Wyoming, United States, with a view of the Old Faithful Geyser. The Inn has a multi-story log lobby, flanked by long frame wings containing guest rooms. With its log and limb lobby and massive (500-short-ton or 450-metric-ton, 85-foot or 26-meter) stone fireplace, the inn is an example of the "Golden Age" of rustic resort architecture, a style which is also known as National Park Service Rustic. It is one of the few log hotels still standing in the United States, and was the first of the great park lodges of the American west. Initial construction was carried out over the winter of 1903–1904, largely using locally obtained materials including lodgepole pine and rhyolite stone. When the Old Faithful Inn first opened in the spring of 1904, it boasted electric lights and steam heat. The structure is the largest log hotel in the world; possibly even the largest log building in the world. In 2007 the American Institute of Architects conducted a survey to determine the 150 favorite buildings in America; the Old Faithful Inn ranked 36. The Inn, which was designated a National Historic Landmark in 1987, is itself part of the Old Faithful Historic District. Old Faithful Inn is a member of Historic Hotels of America, the official program of the National Trust for Historic Preservation.

Spasmodic Geyser is a geyser located in the Upper Geyser Basin in Yellowstone National Park in the United States. Spasmodic Geyser's eruptions from the two craters can be up to 15 feet (4.6 m) high. Water can also erupt from a few inches to ten feet high from the approximately 20 vents. The intervals between eruptions are irregular, but most are in the 1-3 hour range. Spasmodic Geyser was named by A.C. Peale, from the 1878 Hayden survey team, for its erratic eruptions. Its temperature is about 92 °C (198 °F). Spasmodic Geyser is also connected to the nearby Penta Geyser, which is smaller. While Penta Geyser is erupting, there is no activity from Spasmodic Geyser. Activity from Spasmodic Geyser usually precede eruptions from Sawmill Geyser and Penta Geyser.

Old Faithful is a cone geyser in Yellowstone National Park in Wyoming, United States. It was named in 1870 during the Washburn–Langford–Doane Expedition and was the first geyser in the park to be named. It is a highly predictable geothermal feature and has erupted every 44 minutes to two hours since 2000. The geyser and the nearby Old Faithful Inn are part of the Old Faithful Historic District.

Crested Pool is a hot spring in the Upper Geyser Basin in Yellowstone National Park. The spring is 42 feet (12.8 m) deep. It is named for the "crest" which surrounds the pool. Although it is considered a spring, Crested Pool sometimes erupts like a geyser.