In Jenolan’s depth
You should wonder – with amazement What is it you stare; Cyanobacteria, twenty thousand years old, they say But why should anyone care? More beyond drab rocks in limestone tomb, Precious life hides in this stony layer? The first ones who had learned to breathe, Stromatolites a complex name, But these were the ones who gave out air For the burning world to tame This is then a pilgrimage – one to the farthest past To Life, its primal shrine Last reminders left - how the mortals were woken up When the earth was turned divine… The sonnet is dedicated to the Nettle Caves in the wider Jenolan Caves network where one can see cyanobacteria in the stromatolite rocks. Stromatolites (meaning layered rocks) are living fossils and the oldest living lifeforms on our planet. They are stony structures built by colonies of microscopic photosynthesising organisms called cyanobacteria. As sediment layered in shallow water, bacteria grew over it, binding...