Beyond the foothills, the land altered its tone. The soft green of tall grasses became a scrubby tangle; rivers narrowed into knotty channels and then disappeared into sandy basins. The party's instruments registered long, unbroken stretches with few reliable heavenly fixes; the cartographer improvised trig lines and made notes by candle. The country stopped being an ordered series of waypoints and became a contest of judgment, a place where a single misread slope could mean days of delay.
The first encounters with the continent’s indigenous inhabitants were abrupt and uncompromising. In one valley a hunting party watched the newcomers with the suspicion that comes from a people used to strangers carrying strange instruments. The meeting was factual and tense; trade goods were exchanged, but there was no illusion of shared priorities. The expedition took care to acknowledge local knowledge where it aided movement — a hunter’s knowledge of waterholes, a woman's knowledge of roots — and those practical exchanges shaped the route the wagons finally took. But not all interactions were peaceful. On occasion, a misunderstanding over resources created a skirmish that left men wounded on both sides. The reality of such encounters was stark: land that could be drawn with a pen had belonged to people with their own histories and obligations, and the mapping party passed through as if paper were destiny.
Science continued even amidst friction. The cartographer recorded a basin whose outline did not match published charts; notes on soil strata, plant life and the occasional bone of long-buried fauna went into the journals. A small, pale rodent the party had not seen before appeared on the margins of one sketch; the naturalist noted fur patterns and dentition, marking the specimen for later classification. At night the men debated weather signs and compiled observational notes, aware that these fragments would later be assembled into an account that might determine migration corridors.
The weather began to shift with surprising speed. A mountain storm arrived with a suddenness that told of the altitude's cruelty: rain that turned to freezing sleet, a wind that cut through wool and leather. One scouting party returned with hands numb enough to lose dexterity; an amateur meteorologist in the group made notes about barometric change that would later be seen as prescient. Shelter was scarce: the natural hollows that might have held a day's reprieve were occupied or dry. In the cold, blisters became infected and men who had laughed at the idea of winter found themselves unable to sleep. The medical chest yielded bitter medicines that altered the stomach and did little for the fever.
Equipment failures compounded the weather's bite. A chronometer stopped, perhaps for want of oil, and forced the surveyor to rely on dead reckoning for a day. A pack saddle buckled under strain and a load of instruments slid into a wash, ruining paper and soaking ink. The loss of a single observation meant that later lines of the map would be drawn with a gap. The party reacted the way any engineers would: they improvised clamps from spare iron, sewed a leather patch with a surgeon's needle, scavenged strips of cloth to protect the remaining instruments. The mood among the technicians was a mixture of anger and professional grief; their work was fragile and the country took delight in breaking it.
Despite the privations, there were moments that approached transcendence. At high camp, above treeline, the men witnessed a dawn where light came like a blade and the valley opened in a way maps could not render: the way a river braided into arms that caught light differently with each bank, a slope whose feathering of color suggested mineral seams, a distant chain that held the first white glints of snow. A few men wrote later of a sense of smallness before such vistas, of being both observers and intruders. Those sensations did not soften the calculus of survival, but they did yield the obsessive meticulousness that would make their later publications compelling to readers back east.
The psychological toll of the months in the field was visible. Men who had once been steady became prone to fits of anger; others withdrew, writing short letters and tucking them into their journals as if to preserve a private life. Sleep deprivation magnified trivial slights. One key member of the surveying corps began to show signs of despair: listless, refusing to attend observations, and increasingly absent from the work of note-taking. Leadership tried to redistribute duties, but the strain was cumulative. Private letters, hidden in instrument cases, spoke of home and food and the absurd longing for the city's simple things.
Danger assumed newer forms as the party pushed deeper. In a canyon with little grass, game was scarcer; men stretched rations to bread and roots. In one remote period of days, food ran so thin that measures once unthinkable — a rationing of coffee to a spoonful per man — became necessary. Two men collapsed with weakness and had to be lifted into a wagon. The question that repeatedly haunted the officers was not only how to reach the next source of water but whether to press on when the cost was visible in the men’s gaunt faces. Choices of route and schedule were ethical as well as technical.
The expedition's journals from this stretch filled with fragments that would later be mined by scientists and politicians alike: precise barometer readings beside hastily sketched plant specimens, a rough map of a pass with notations about forage, and a terse account of an exchange that had nearly turned violent at a river crossing. These documents, created under pressure and smell of wood smoke, were the raw materials of fame. But fame, the party was learning, exacted a price not only on the land but on those who crossed it. The mood hardened. The men had passed the point of return for some of their illusions. What lay ahead was a narrower world of decisions that could not be taken back: a choice of pass, a trade-off of food for speed, a tacit surrender to the weather. At the end of a long, cold day the officers huddled over maps and made the decision that would put them on a difficult ridge the next morning. That ridge would determine whether the party would find an easier corridor toward the coast or be forced into a longer, dangerous detour.