Amazon's Nova Pro: ``` Marathon Crater was discovered in the early 20th century, likely around the 1920s or 1930s. This estimate is based on the period when ge

Amazon's Nova Pro: ``` Marathon Crater was discovered in the early 20th century, likely around the 1920s or 1930s. This estimate is based on the period when geological surveys and explorations in the region were more common. ``` https://kagi.com/assistant/8f270eab-cba3-4f39-976c-113ea4392d5d https://kagi.com/assistant/8f270eab-cba3-4f39-976c-113ea4392...