> None of it is correct because it was not asked about Marathon Valley, it was asked about Marathon Crater, a thing that does not exist, and it is claiming that it exists and making up facts about it.
The Marathon Valley _is_ part of a massive impact crater.
If you asked me for all the details of a Honda Civic and I gave you details about a Honda Odyssey you would not say I was correct in any way. You would say I was wrong.
The Marathon Valley _is_ part of a massive impact crater.