Geography Question - Mountains #1?

Geography Question - Mountains #1?

Here is the next in a new series of Geography questions... with a different category each day.

Monday - Bodies of Water
Tuesday - Buildings and Structures
Wednesday - Mountains
Thursday - Where Did It Happen?
Friday - Bridges
Saturday & Sunday - Random category

Today's category is Mountains.

Can you name this Mountain?

Here are your clues:
* It is the world's tallest mountain, measured from its base to its peak (10,205m 33,480 ft)
* It was formed from volcanic action
* A healthy person can climb it without external oxygen
* It is in a country whose capital is in North America

Note: The picture may or my not be a hint. Don't rely on the picture.

Please don't cheat by looking it up or seeing what others are posting.

Make your guess in the opinions below.

The correct answer will be given in a few days (Friday).

Good luck!

Updates
1 y
The correct answer is MAUNA KEA in Hawaii.
It is an inactive volcano 10,203 m (33,474 ft) from its base on the ocean floor to its peak, more than 1300 m (4000 ft) taller than Mt Everest.
Geography Question - Mountains #1?
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