Yellowstone National Park
Wyoming, Montana, Idaho
Morning Glory Pool
Upper Geyser Basin

Morning Glory Pool is a deep, funnel-shaped pool with a dark blue center. The resemblance to the corolla and color of a morning glory is responsible for its name in the early 1880s. It has been a popular thermal feature and a symbol of Yellowstone. An early stagecoach and automobile road came within a few feet of this pool until 1971 when the road was rerouted. Early visitors heedlessly removed the delicate border and dumped debris into the pool. In 1950 the water level was lowered by siphoning which induced the pool to erupt. Socks, bath towels, 76 handkerchiefs, $86.27 in pennies, $8.10 in other coins came up; in all, 112 different objects were removed from Morning Glory. The debris had reduced the flow of water and contributed to the decline in temperature, causing bacteria to grow in the cooler yellow and orange edges of the pool.

You can no longer drive to Morning Glory Pool. It now requires a 1.5 mile walk from the Old Faithful Visitor Center.  Take your time along these trail and watch some of the geysers. Don't just rush down the trail to get to the much publicized Morning Glory Pool.  If Morning Glory was the only thing to see here you'd be disappointed.

Spa Geyser has an interconnecting relationship with Grotto and Rocket geysers. Spa Geyser usually erupts during a long eruption (more than 2.5 hours) of Grotto Geyser.  If it does not erupt during an eruption of Grotto Geyser, then the 36-foot diameter basin then usually overflows with boiling water. An eruption is characterized by a full and overflowing basin, boiling and surging to a height of 3-4 feet, then a series of explosive bursts lasting several minutes to several hours.

Launch the Old Faithful Streaming Video Webcam | Two more Old Faithful Geyser Webcams

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A Abraham Lincoln Birthplace NHS|Acadia NP|Adams NHS|Agate Fossil Beds NM|Agua Fria NM|Allegheny Portage Railroad NHS|Anacostia Park|Andersonville NHS|Andrew Johnson NHS|Antietam NB|Appomattox Court House NHP|Arches NP|Arlington National Cemetery|Aztec Ruins NM

B Badlands NP|Bandelier NM|Big Bend NP|Big Cypress NP|Big Hole NB|Bighorn Canyon NRA|Big South Fork NRRA|Big Thicket NP|Biscayne NP|Black Canyon of Gunnison NP|Blue Ridge Parkway|Booker T Washington NM|Boston NHP|Brown vs Board of Education NHS|Bryce Canyon NP

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D Dayton Aviation Heritage NHP|Death Valley NP|Deshler-Morris House|De Soto NM|Devil's Post Pile NM|Devil's Tower NM|Dinosaur NM|Dry Tortugas NP

E Ebey's Landing NHR|Edgar Allan Poe NHS|Edison NHS|Effigy Mounds NM|Ellis Island NM|El Malpais NM|El Morro NM|Erie Canalway NHC|Eugene O'Neill NHS|Everglades NP

F FDR Memorial|Fire Island NS|Flaming Gorge NRA|Flight 93 NM|Florissant Fossil Beds NM|Ford's Theater NHS|Fort Bowie NM|Fort Circle Parks|Fort Foote Park|Fort Frederica NM|Fort Laramie NHS|Fort Larnard NHS|Fort Matanzas NM|Fort McHenry NMS|Fort Necessity NB|Fort Pulaski|Fort Raleigh NHS|Fort Scott NHS|Fort Stanwix NM|Fort Sumter NM|Fort Union NM|Fort Vancouver NHS|Fort Washington|Fossil Butte NM|Frederick Douglass NHS|Fredericksburg-Spotsylvania NHP|Fredrick Law Olmsted NHS|Friendship Hill NHS

G Gateway NRA|George Washington Birthplace N.M.|George Washington Carver NHS|George Washington Parkway|Gettysburg NMP|Glacier NP|Glen Canyon NRA|Glen Echo Park|Gloria Dei (Old Swedes' Church) NHS|Golden Gate NRA|Golden Spike NHS|Giant Sequoia NM|Gila Cliff Dwellings NM|Glacier NP|Grand Canyon NP|Grand Canyon/Parashant NM|Grand Portage NM|Grand Staircase/Escalante NM|Grand Teton NP|Grant Kohrs Ranch NHS|Great Basin N P|Great Sand Dunes NP|Great Smokey Mountains NP|Guadalupe Mountains NP|Guilford Courthouse NMP

H-I Hagerman Fossil Bed NM|Hampton NHS|Hanford Reach NM|Harmony Hall|Harpers Ferry NHP|Harry S Truman NHS|Hells Canyon NRA|Herbert Hoover NHS|Hohokam-Pima NM|Homestead NM|Hopewell Culture NHP|Horseshoe Bend NMP|Hot Springs NP|Hovenweep NM|Hubble Trading Post NHS|Independence NHP|Ironwood NM

J-K James A Garfield NHS|Jean Lafitte NHP|Jefferson Memorial Jewel Cave NM|Jimmy Carter NHS|John Day Fossil Bed NM|John F Kennedy NHS|John Muir NHS|Johnstown Flood NM|Joshua Tree NP|Kasha-Katuwe Tent Rocks NM|Kenilworth Park|Kennesaw Mountain NBP|Kings Canyon NP|Kings Mountain NMP|Klondike Gold Rush NHP

L Lake Mead NRA|Lake Roosevelt NRA|Lassen NP|Lava Beds NM|Lewis and Clark NHP|Lincoln Home NHS|Lincoln Memorial|Little Big Horn NM|Little River Canyon NP|Longfellow NHS|Lowell NHP|Lyndon B Johnson NHP

M Maggie L Walker NHS|Mammoth Cave NP|Manassas NB|Manzanar NM|Marsh Billings Rockefeller NHP|Martin Luther King NHS|Meridian Hill Park|Mesa Verde NP|Minidoka Internment NM|Minute Man NHP|Minuteman Missile NHS|Mojave NP|Monocacy NB|Montezuma Castle NM|Moores Creek NB|Morristown NHP|Mount Rainier NP|Mount Rushmore NM|Mount St. Helens NM|Muir Woods NM

N Natural Bridges NM|Natchez NHS|Natchez Trace NP|Nat'l Center Preservation Tech & Training|Navajo NM|Newberry Volcanic NM|New Orleans Jazz NHP|Nez Perce NHP|Ninety Six NHS|North Cascades NP

O Ocmulgee NM|Old Post Office Tower|Old Stone House|Olympic NP|Oregon Caves NM|Organ Pipe Cactus NM|Oxon Cove Park & Oxon Hill Farm

P Padre Island NS|Palo Alto Battlefield NHS|Pecos NHP|Peirce Mill|Petersburg NB|Petrified Forest NP|Petroglyph NM|Pentagon NM|Pinnacles NM|Pipe Spring NM|Pipestone NM|Piscataway Park|Point Reyes NS|Port of Chicago NM|Poverty Point NM

 R Rainbow Bridge NM|Redwood NP|Richmond NBP|Rock Creek Park|Rocky Mountain NP|Rosie the Riveter NHP|Russell Cave NM

S Sagamore Hill NHS|Saguaro NP|Saint-Gaudens NHS|Salem Maritime NHS|Salinas Pueblo Missions NM|San Antonio Missions NHP|San Francisco Maritime NHP|San Juan NHP|San Juan Island NHP|Santa Monica Mountains NRA|Santa Rosa - San Jacinto Mountains NM|Saratoga NHP|Saugus Iron Works NHS|Scott's Bluff NM|Sequoia NP|Shenandoah NP|Silos & Smokestacks NHA|Sonora Desert NM|Stanwix NM|Statue of Liberty NM|Stones River NB|Sunset Crater NM

T Thaddeus Kosciuszko NM|Theodore Roosevelt NP|Theodore Roosevelt Inaugural NHS|Theodore Roosevelt Island|Thomas Stone NHS|Timpanogos Cave NM|Timucuan Eco & Hist NP|Tonto NM|Trail of Tears NHT|Tumacácori NHP|Turkey Run|Tuskegee Airmen NHS|Tuskegee Institute NHS|Tuzigoot NM

U-V Upper Missouri River Breaks NM|Valles Caldera NP|US Capitol Building|Valley Forge NHP|Vermillion Cliffs NM|Vicksburg NMP|Voyageurs NP

W Walnut Canyon NM|Washington DC|Washington Monument|Weir Farm NHS|Whiskeytown NRA|White Sands NM|Whitman Mission NM|William Howard Taft NHS|Wilson Creek NB|Wind Cave NP|Wolf Trap NP|Women's Rights NHP|Wright Brothers NM|Wupatki NM

 Y-Z Yellowstone NP|Yosemite NP|Yucca House NM|Zion NP

More Photographs by Steve: Antelope Canyon|Monument Valley

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Revised: November 12, 2011.
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