Nearly 300 metres beneath Mexico’s Chihuahuan Desert, miners tunnelling for ore broke into a chamber filled with crystals as long as a bus — giant beams of gypsum up to 11 metres long, hidden underwater for hundreds of thousands of years until mine pum - Space Daily
Source:Space Daily
The discovery challenges everything we thought we knew about how giant crystals form — and raises urgent questions about what else lies hidden in Earth’s deep aquifers.