Mysterious parallel microtunnels discovered in rock defy geology and could be the work of unknown microscopic ancient life.

Rocks in Australia preserve evidence that plates in Earth’s crust were moving 3.5 billion years ago, a finding that pushes back the beginnings of plate tectonics by hundreds of millions of years.

Authorities examining the rock where the petroglyphs have been discovered. (YouTube Screenshot) The municipality is often presented as a rock-art hotspot within the state, and Heritage Daily notes ...