Sediments reveal secrets from before the Great Barrier Reef was underwater

What happened

Tens of thousands of years ago, the Great Barrier Reef was above water. Whether it was grassland, rainforest, or mangrove swamp is something researchers and Indigenous rangers are trying to uncover.

Summary assembled by rule from the sources below

Timeline

1. 01:56
   First appeared on ABC News (Australia)ABC News (Australia)

Sources