How would a 30-kilometer tall mountain on an Earthlike planet look?

Let us take an earthlike planet. Approximately same radius, atmosphere and climate.

Now let us create an approximately circular, paleovolcanic mountain approximately 30 kilometers in height and 150 kilometers in radius, not dissimilar from Olympus Mons. The crater's radius is 20 kilometers and its depth is 10 kilometers. The mountain is located in a temperate continent similar to Europe, surrounded by grasslands, forests, hillscapes and normal mountain ranges similar to the Alps. It borders the ocean to the south.

How would such a mountain look from orbit and from the surface? What vegetation and climate zones would exist? Is it true that there would be no snow above 15 kilometers due to lack of water?

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How would a 30-kilometer tall mountain on an Earthlike planet look?

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