Geosonnet 39

The Kelly Caves, where bushrangers once hid

Were shelter of a venerated kind.

Cro-Magnon ancestors did not forbid

Shelter, and art, in caverns thus confined.

But holes in rock as habitat might date

To early in our planet’s history

The microbes and the cavemen can relate

Archean prelude Pleistocene story

Both sheltered in a mineral cavity.

The upside-down microstromatolites

Cling to the roof, outlaws of gravity

Not methane, autotroph metabolites

   These outlaws hid beneath the algal mats

   Kerogenated troglodytic bats

Geology 44 51

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