In 2016, #geologists discovered an extraordinary phenomenon deep beneath a #Canadian mine —
#Earth’s Oldest #Water : a water source trapped in rock for over 2.6 billion years

https://indiandefencereview.com/oldest-water-geologists-took-a-sip/

They Found Earth’s Oldest Water—Then Geologists Took a Sip and Were Stunned by What They Discovered!

When geologists discovered Earth’s oldest water, they never expected a simple sip would reveal something truly astonishing!

Indian Defence Review