Microbes survived inside giant cave crystals for up to 50,000 years.

Microbes found stowed inside giant crystals in caves in Chihuahua, Mexico, may have survived there for tens of thousands of years. The microorganisms, which appear to be vastly different from nearly all life-forms found on Earth, offer a good indication of how resilient life can be in extremely harsh environments, including those found on other planets.

https://www.sciencenews.org/article/microbes-survived-inside-giant-cave-crystals-50000-years

https://www.pbs.org/wgbh/nova/article/ancient-microbial-life-found-trapped-inside-mexicos-cave-of-crystals/

https://www.youtube.com/watch?v=r743JtaHE6w

>3I/ATLAS
Its possible ATLAS contains ancient dormant life from another solar system.