barito bajada
Desert varnishStone & Ground

Desert varnish

Manganese / iron coating

The dark, almost polished sheen on long-exposed rock faces — a microbial coating that takes thousands of years to form. It's the canvas ancient peoples scratched petroglyphs into; if you find marked rock, leave it and note it.

Key

Part of the Barito story / notable
Barito Bajada — field notes from the desert