High Mountains

The highest mountain in the world today, is of course Mt. Everest. This is a bit over 29,000 feet.

I wonder whether in past ages, there were even higher mountains, and how high they were.

The shape of continents which existed in the past, can be found out, and described to us, by modern geologists.

Can geologists also ascertain what height mountains were in the past? Were there any "super-Everests"?

Long before our thorough knowledge in Geology and the like, I think there are greater mountains as high as Mt. Everest and even higher than the highest we've known. So, I think geologist might be interested on studying the shape of continents and land forms to find out about the Earth's stunning topology in the past and even come up with a conclusion that there was one highest mountain that existed before.

If there were mountains higher than Everest that existed in the past, it will be interesting to know how did they lose their peak? And will this also happen to Everest in the future?

And that made me curious and confused at the same time. Now, I wonder also. But I think yes, but I find it hard to defend my answer. hahaha sorry for being so silly.