Upon giving my wife three options for our first easing-into overnight hiking—7kms, 11kms or 14.5kms—35 degrees, up and down hills, extreme fire danger slightly lessened, total fire ban lifted overnight, but still windy, still hot, still end-of-summer dry, thunderstorm with 40mm of rain expected overnight—she decides on the 14km option. ‘An adventure!’ she says. We drive out to where the 1000km-long trail intersects with some forgotten road just past a river crossing of not much water, and throw our packs on, before drinking as much of our spare water as possible. And then we step off, thinking the trail will wind somewhat gently, easily, gradually along the river and we can stop for swims whenever we feel we need it. The track is loud with dead, dry leaves, dug up by the rummaging of wild pigs, splattered with the squashed flat-caked droppings of emus, painted white under trees where black cockatoos have eaten, covered in nuts and branches at the same, lined with what I think is called hazel and occasionally bracken, all tall, thin and the same size—a kind of invasive native opportunistic post-fire plant—the burned trunks of the jarrah and marri and blackbutt trees recording when the last fire went through, some dead, balgas happy, jiragee the zamia (often a victim of the borer’s/boarer’s digging I think), the occasional banskia. And whenever we get a glimpse above the hazel we can see down to the river’s lighter green leaves of tuarts, and the thinner light green of the paperbark leaves, maybe a vision of the white-dry bank, a dark pool here or there in spots, and the valley rising again on the other side. The sun blares on, the pack gets heavier even though we drink them lighter. We decide to push through to the river on a side path and see if we can walk up it for a while, at which point we cross the path we thought we were on, reach the river— bone dry—and follow it a while downstream. Water appears, dark and still, and then grows, wider and wider, as our choices for walking grow thinner and thinner, until we’re bashing through branches on the edge of the bank, large pools of water awaiting our missteps. We push on following a kangaroo trail, up and down, and then eventually come to another trail out. We swim first and eat, then push our way through hazel and spiky wattle and other thin shrubs back onto the trail, where we now have to step over logs, dodge the endless overhanging branches, keep an eye out for snakes, listen to the sound of the occasional mammal scattering through the bush—sometimes kangaroo, sometimes maybe emu or pig. Fantails come with us. Red tailed black cockatoos karak and encourage us along. It’s hot. The occasional wren. A ring necked lorikeet. Gravel and the odd pile of granite, or a rounded granite outcrop. Up and down, a road, a dry creekline or two that in winter would be wet. We find another river entrance and swim again, with birin birin the rainbow honeyeater flying overhead. Some afternoon tea on the stove. And then we climb and climb, along a ridgeline looking west, then down, down, knowing what tomorrow will bring. The end, some six hours after starting, moves from in front to behind us on our map—we go back to look—nothing, only to find it was just beyond where we’d turned around. A hut on the trail. We swim again, set up the tent, break out the stove and cook with the sunset pink in the sky. I wake in the dark, expecting rain around midnight. The wind has picked up, thunder, lightning, a little rain, but not much, then all is quiet. Morning brings stillness. We re-pack. More thunder, some clouds pass by. A tickle of rain as we shove the last of our things in. And then retrace the whole thing in reverse. And I wonder what we’ve learned. Maybe a few things. Maybe just this: the imagination is the bridge from a science of the material to a science of the immaterial. And that I think I prefer hike-in camping to long-distance hiking. It is not the walking with heavy things on the back which is appealing, but the insights into nature which both we and nature require.