The most exciting spots on a topographical map are where contour lines gather tightly side by side and blush the map with a patch of bright pink. The background of light green is barely visible between each squiggle. Sometimes additional straight lines, drawn across the curves, lead you to the map legend – "steep slope" it says, or cliffs or escarpment.
In Washpool National Park, along Coombadjha Creek, on the Coombadjha 1:25000 topographical map, there is a short 1-2km section that draws the eye like this – a small square of tightly packed pink that glows enticingly. It's been on our explorers' list of 'things to do' for some time – surely that piece of steep-sided country hides crashing waterfalls and spectacular remote rainforest.