Regal Mountain is an eroded stratovolcano

Stratovolcano

A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...

 or shield volcano

Shield volcano

A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They are named for their large size and low profile, resembling a warrior's shield. This is caused by the highly fluid lava they erupt, which travels farther than lava erupted from more explosive volcanoes...

 in the Wrangell Mountains

Wrangell Mountains

The Wrangell Mountains are a high mountain range of eastern Alaska in the United States. Much of the range is included in Wrangell-Saint Elias National Park and Preserve. The Wrangell Mountains are almost entirely volcanic in origin, and they include the second and third highest volcanoes in the...

 of eastern Alaska

Alaska

Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

. It is located in Wrangell-Saint Elias National Park about 19 mi (31 km) east of Mount Blackburn

Mount Blackburn

Mount Blackburn is the highest peak in the Wrangell Mountains of Alaska in the United States. It is the fifth highest peak in the United States and the twelfth highest peak in North America. The mountain is an old, eroded shield volcano, the second highest volcano in the United States behind Mount...

, the second highest volcano in the United States, and southeast of the massive Nabesna Glacier

Nabesna Glacier

Nabesna Glacier is a glacier in the U.S. state of Alaska. Fed by deep snowfall in the Wrangell Mountains, the 75 mile long Nabesna is the longest valley glacier in North America and the world's longest interior valley glacier....

. Regal Mountain is the third highest thirteener

Thirteener

In mountaineering in the United States, a thirteener is a mountain that exceeds above mean sea level, similar to the more familiar "fourteeners," which exceed...

 (a peak between 13,000 and 13,999 feet in elevation) in Alaska, ranking just behind its neighbor, Atna Peaks

Atna Peaks

Atna Peaks is an eroded stratovolcano or shield volcano in the Wrangell Mountains of eastern Alaska. It is located in Wrangell-Saint Elias National Park about 6 mi  east of Mount Blackburn, the second highest volcano in the United States, and just south of the massive Nabesna Glacier...

. Because the mountain is almost entirely covered in glaciers, no geological studies have been done, but published references state and the geological map shows that the mountain is an old eroded volcanic edifice.

Several major glaciers flow from the steep and heavily eroded flanks of Regal Mountain. The Rohn Glacier and Regal Glacier head east and southeast to join the Nizina Glacier, while the Root Glacier flows south 15 miles (24 km) to join the Kennicott Glacier

Kennicott Glacier

Kennicott Glacier is a glacier in the U.S. state of Alaska. It trends southeast 43 km from Mount Blackburn to its terminus at the head of the Kennicott River in the Wrangell Mountains. It is located in the middle of Wrangell-St...

 just above the town of McCarthy

McCarthy, Alaska

McCarthy is a census-designated place in Valdez-Cordova Census Area, Alaska, United States. The population was 42 at the 2000 census.- Geography and location:...

. Each of those large glaciers exceeds 1 miles (1.6 km) in width, but largest of all on Regal Mountain is a massive unnamed glacier, over 3 miles (5 km) across, which flows northwest just over 10 mi (16 km) to join the mighty Nabesna.

See also

• 4000 meter peaks of Alaska
• 4000 metre peaks of Canada
• 4000 meter peaks of North America
• 4000 meter peaks of the United States
• Mountain peaks of Alaska
  Mountain peaks of Alaska
  This article comprises three sortable tables of mountain peaks of the U.S. State of Alaska.Topographic elevation is the vertical distance above the reference geoid, a precise mathematical model of the Earth's sea level as an equipotential gravitational surface. Topographic prominence is the...
  
  
• Mountain peaks of Canada
  Mountain peaks of Canada
  This article comprises three sortable tables of major mountain peaks of Canada.Topographic elevation is the vertical distance above the reference geoid, a precise mathematical model of the Earth's sea level as an equipotential gravitational surface. Topographic prominence is the elevation...
  
  
• Mountain peaks of North America
  Mountain peaks of North America
  This article comprises three sortable tables of major mountain peaks of greater North America.This article defines greater North America as the portion of the continental landmass of the Americas extending northward from Panama plus the islands surrounding that landmass...
  
  
• Mountain peaks of the United States
  Mountain peaks of the United States
  This article comprises three sortable tables of the major mountain peaks of the United States of America.Topographic elevation is the vertical distance above the reference geoid, a precise mathematical model of the Earth's sea level as an equipotential gravitational surface...