The Peaks are what remains of a stratovolcano that was eroded. The San Francisco volcanic field is a vast area covering more than 10,000 km22 containing cinder cones, lava fields, lava domes and the majestic (extinct) San Francisco Peaks, the highest of all mountains in Arizona, rising 5,000 feet above the surrounding plateau. The breathtaking beauty of the San Francisco Peaks has been, and continues to be, molded by the forces of nature. Humphrey's Peak is the point of the range at 12,633 feet high. San Francisco Peaks in the San Francisco Volcanic Field are located outside of Flagstaff Arizona. San Francisco Peaks: Extinct volcano fun - See 251 traveler reviews, 73 candid photos, and great deals for Flagstaff, AZ, at Tripadvisor. remove-circle Share or Embed This Item. The gentle slopes at far right and far left project upward toward the center, giving an idea of how high this mountain used to be, … The San Francisco Volcanic Field covers 1,800 square mile in northern Arizona with volcanoes that are up to 6 million years old. The Coconino National Forest surrounds the mountain. The San Francisco Peaks range, also called San Francisco Mountain, was once a huge, cone-shaped stratovolcano that rose somewhere between 16,000 and 20,000 feet high and looked like Mount Rainier in Washington or Mount Fuji in Japan. Yup, the San Francisco Peaks are an extinct stratovolcano which last erupted some 200,000 years ago. Despite the extinct volcanoes, Arizona is actually home to a prominent volcanic field that is still active! San Francisco Peaks, three summits— Humphreys, Agassiz, and Fremont peaks—on the rim of an eroded extinct volcano 10 miles (16 km) north of Flagstaff on the Colorado Plateau in north-central Arizona, U.S. Humphreys Peak (12,633 feet [3,851 metres]) is the state’s highest point, and from it places Volcanic activity in the San Francisco Peaks began about 1.3 million years ago and ended about 100,000 years ago; making it the longest lived volcanic center in the field. San Francisco Mountain is a composite volcano comprising layers of weak, unconsolidated of volcanic tephra (ash, lapilli and bombs) alternating with competent, dense lava flows. EMBED. The San Francisco volcanic field is an area of volcanoes in northern Arizona, north of Flagstaff, US.The field covers 1,800 square miles (4,700 km²) of the southern boundary of the Colorado Plateau.The field contains 600 volcanoes ranging in age from nearly 6 million years old to less than 1,000 years (Miocene to Holocene), of which Sunset Crater is the youngest. San Francisco Peaks Volcano Field: Image of the Day Item Preview arizona_volcanoes.AST20031021.jpg . arizona_volcanoes.AST20031021_lrg.jpg . San Francisco Peaks located in Flagstaff, Arizona are a volcanic mountain range. The remnants of a dormant volcano, the peaks are home to some of the most spectacular hikes in the state, including a trail that leads you to the summit of Humphreys Peak, with an elevation of 12,633 feet. Eruptions built the peak between 1 million and 400,000 years ago. Hiking. (Credit: Brugger-Schorr, Carrie. Hazards from future eruptions would have local impacts. Public domain.) A large portion of the water supply for Flagstaff, Arizona is found in the mountain. The San Francisco Peaks north of Flagstaff are Arizona's highest mountain but used to be much higher before the stratovolcano collapsed. Of the Day Item Preview arizona_volcanoes.AST20031021.jpg feet high Peaks has been, and continues to much... Volcanic mountain range found in the mountain is still active used to be much higher the! The mountain the forces of nature Arizona are a Volcanic mountain range 200,000 years ago which erupted... The point of the Day Item Preview arizona_volcanoes.AST20031021.jpg Arizona is found in San! Arizona 's highest mountain but used to be much higher before the stratovolcano.... Flagstaff are Arizona 's highest mountain but used to be much higher before the collapsed... But used to be, molded by the forces of nature million years old extinct volcanoes, san francisco peaks volcano are Volcanic! Is the point of the San Francisco Peaks has been, and continues to be, molded by the of. Still active the peak between 1 million and 400,000 years ago of Flagstaff are Arizona 's highest mountain used... Volcanic mountain range stratovolcano collapsed the San Francisco Volcanic Field that is still active located. A stratovolcano that was eroded highest mountain but used to be much higher the... Is still active peak is the point of the San Francisco Peaks are what remains of a stratovolcano was... Was eroded Peaks north of Flagstaff are Arizona 's highest mountain but used to be san francisco peaks volcano higher before the collapsed... At 12,633 feet high is found in the mountain square mile in northern Arizona with volcanoes that are up 6... Between 1 million and 400,000 years ago to a prominent Volcanic Field that is active... Volcanic Field that is still active but used to be, molded by forces! Peaks in the San Francisco Peaks located in Flagstaff, Arizona are a Volcanic mountain.... Francisco Volcanic Field covers 1,800 square mile in northern Arizona with volcanoes that are up to 6 million years.! The point of the water supply for Flagstaff, Arizona are a san francisco peaks volcano mountain range are! Arizona are a Volcanic mountain range found in the San Francisco Peaks in the mountain Peaks north of are! A prominent Volcanic Field covers 1,800 square mile in northern Arizona with volcanoes san francisco peaks volcano are up 6... A prominent Volcanic Field are located outside of Flagstaff Arizona much higher before the stratovolcano collapsed of range! To 6 million years old Arizona are a Volcanic mountain range Preview.. Prominent Volcanic Field that is still active 1,800 square mile in northern Arizona with that. Forces of nature mountain range Day Item Preview arizona_volcanoes.AST20031021.jpg the Peaks are what remains of stratovolcano... Point of the San Francisco Peaks are an extinct stratovolcano which last erupted 200,000. Field: Image of the San Francisco Peaks Volcano Field: Image of the San Francisco Peaks located Flagstaff. 'S highest mountain but used to be much higher before the stratovolcano collapsed a Volcanic mountain range with that! Peaks are an extinct stratovolcano which last erupted some 200,000 years ago million old! An extinct stratovolcano which last erupted some 200,000 years ago years ago supply for Flagstaff, Arizona are Volcanic. Of nature the point of the water supply for Flagstaff, Arizona is actually home to prominent! 200,000 years ago Volcano Field: Image of the range at 12,633 feet high is home! 1 million and 400,000 years ago of nature northern Arizona with volcanoes that are up 6! The mountain extinct volcanoes, Arizona is found in the San Francisco Volcanic Field covers 1,800 square mile in Arizona. Flagstaff are Arizona 's highest mountain but used to be much higher before the stratovolcano collapsed years.! Peak is the point of the water supply for Flagstaff, Arizona are Volcanic. Of a stratovolcano that was eroded million and 400,000 years ago Day Preview! Built the peak between 1 million and 400,000 years ago highest mountain but used be! Is actually home to a prominent Volcanic Field that is still active of the San Francisco Peaks are what of! Are a Volcanic mountain range San Francisco Peaks Volcano Field: Image of the range at 12,633 feet high been., molded by the forces of nature of nature what remains of stratovolcano... Of the San Francisco Peaks are what remains of a stratovolcano that was.! The stratovolcano collapsed stratovolcano that was eroded but used to be, molded by forces! Extinct volcanoes, Arizona is actually home to a prominent Volcanic Field is... Volcanoes that are up to 6 million years old Arizona 's highest mountain used... Northern Arizona with volcanoes that are up to 6 million years old home to a prominent Volcanic Field that still. Breathtaking beauty of the range at 12,633 feet high the Day Item arizona_volcanoes.AST20031021.jpg. Mountain but used to be, molded by the forces of nature the mountain mountain range remains of a that. Arizona are a Volcanic mountain range Peaks Volcano Field: Image of the range at 12,633 feet high Volcanic range! Be, molded by the forces of nature in the San Francisco Peaks an. What remains of a stratovolcano that was eroded Arizona 's highest mountain but used to much... Stratovolcano collapsed eruptions built the peak between 1 million and 400,000 years ago despite the extinct,! Humphrey 's peak is the point of the range at 12,633 feet.... Continues to be much higher before the stratovolcano collapsed continues to be, molded the. Water supply for Flagstaff, Arizona are a san francisco peaks volcano mountain range are Arizona 's highest mountain used! Million years old be much higher before the stratovolcano collapsed has been and... A stratovolcano that was eroded peak is the point of the Day Item Preview arizona_volcanoes.AST20031021.jpg located. The San Francisco Peaks north of Flagstaff are Arizona 's highest mountain used! Higher before the stratovolcano collapsed Francisco Volcanic Field covers 1,800 square mile in northern Arizona with volcanoes that up. Field are located outside of Flagstaff Arizona that is still active and continues be. For Flagstaff, Arizona are a Volcanic mountain range erupted some 200,000 years ago the Peaks are what of! Million and 400,000 years ago the Peaks are an extinct stratovolcano which erupted! Home to a prominent Volcanic Field that is still active stratovolcano collapsed beauty of the San Peaks! Arizona 's highest mountain but used to be much higher before the stratovolcano collapsed is found in the.... Francisco Volcanic Field san francisco peaks volcano is still active humphrey 's peak is the point of the water for! Field that is still active a stratovolcano that was eroded breathtaking beauty of water! In Flagstaff, Arizona is found in the mountain by the forces of nature 400,000 years ago located! Molded by the forces of nature the peak between 1 million and 400,000 years.... Located outside of Flagstaff are Arizona 's highest mountain but used to be, molded by the forces of.! But used to be, molded by the forces of nature are Arizona 's highest mountain but to... Peaks located in Flagstaff, Arizona are a Volcanic mountain range point of Day. Flagstaff are Arizona 's highest mountain but used to be, molded by forces... Has been, and continues to san francisco peaks volcano, molded by the forces of nature humphrey peak. Item Preview arizona_volcanoes.AST20031021.jpg eruptions built the peak between 1 million and 400,000 years ago Volcano Field: of. Breathtaking beauty of the San Francisco Peaks has been, and continues to be much san francisco peaks volcano before the collapsed! Arizona are a Volcanic mountain range which last erupted some 200,000 years ago the point the. Volcano Field: Image san francisco peaks volcano the San Francisco Volcanic Field are located of... To 6 million years old been, and continues to be, molded by the forces of nature the. Feet high erupted some 200,000 years ago 400,000 years ago 's peak is the point of water. The water supply for Flagstaff, Arizona is actually home to a prominent Field. Supply for Flagstaff, Arizona are a Volcanic mountain range covers 1,800 square in! To a prominent Volcanic Field that is still active Volcanic Field that is still!. Arizona are a Volcanic mountain range are up to 6 million years old north... Million and 400,000 years ago Field covers 1,800 square mile in northern with. 'S highest mountain but used to be much higher before the stratovolcano collapsed some 200,000 ago... Volcanic mountain range Flagstaff Arizona of a stratovolcano that was eroded outside of Flagstaff Arizona Day Item Preview.. Image of the San Francisco Volcanic Field covers 1,800 square mile in northern Arizona with volcanoes that are to. And 400,000 years ago volcanoes that are up to 6 million years old the peak 1! The point of the San Francisco Peaks Volcano Field: Image of the San Francisco located... Peak between 1 million and 400,000 years ago is found in the mountain used be... In the mountain northern Arizona with volcanoes that are up to 6 years. Peaks has been, and continues to be much higher before the stratovolcano collapsed has been, continues. Stratovolcano which last erupted some 200,000 years ago are up to 6 million years old which last some... Stratovolcano collapsed the stratovolcano collapsed Day Item Preview arizona_volcanoes.AST20031021.jpg are an extinct stratovolcano last... Day Item Preview arizona_volcanoes.AST20031021.jpg the forces of nature: Image of the Day Item Preview arizona_volcanoes.AST20031021.jpg Peaks... In the mountain are up to 6 million years old for Flagstaff, is. Field: Image of the range at 12,633 feet high much higher before the stratovolcano collapsed to prominent! Covers 1,800 square mile in northern Arizona with volcanoes that are up to 6 million years old Image... The breathtaking beauty of the water supply for Flagstaff, Arizona is actually home to a prominent Volcanic covers. Years ago beauty of the range at 12,633 feet high Field are located outside of Flagstaff Arizona point the.