She was looking for frogs in the San Mateo hills. Then she stumbled upon an Ice Age mystery
- Posted on September 10, 2026
- By Bing News
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- 1 min read
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She was looking for frogs in the San Mateo hills. Then she stumbled upon an Ice Age mystery
It looked like an odd rock at first, but a geomorphologist found a 10,000-year-old Pacific mastodon tooth.
