Deep beneath Carlsbad Caverns National Park in New Mexico lies Lechuguilla Cave. Known as Lechuguilla Cave, this enormous labyrinth stretches hundreds of feet deep within the rocky Earth's crust, through dark passages and fragile crystal formations that have remained undisturbed for millions of years. According to the study Antibiotic Resistance Is Prevalent in an Isolated Cave Microbiome , for about four to seven million years, large sections of the cave have remained cut off from the outside world. There is no light here, no rainfall in its deepest chambers, and no evidence that people had previously entered this area.
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