Scientists have identified mysterious, ancient micro-tunnels within Neoproterozoic marble and limestone formations in the Namibian desert. These structures, just half a millimeter wide, are believed to have been created by endolithic microorganisms millions of years ago, challenging our understanding of how life interacts with solid rock in extreme environments.
The discovery, detailed in research released in January 2026, reveals that these organisms may have "mined" the rock for nutrients, leaving behind thin rims enriched in phosphorus and sulfur. This geological and biological research provides a unique window into prehistoric life forms that survived without sunlight, offering potential parallels for studying life on other planets like Mars.
