They moved north and west into country that refused tidy maps or easy assumptions. Gradations between cultivated plazas and wilder woodland found no neat edges: broad maize terraces ran right up to bottomland thickets, and settlements sat perched on river terraces known only to those who had learned to read flooded land. At certain fords the rivers did not roar so much as breathe — slow, brown sheets of water that moved with a heavy, indifferent patience. Men set out in rafts hewn from local timber; the planks creaked and sank a little under packed weight. Horse bellies were wet to the flank as the animals pushed, the damp of the current splashing to the girths. Mud sucked at leather boots with a sticky, obscene patience; the smell of algal scum and decaying plant life rose with each step. Hosiery and straps were frayed by bulrush stems, and the air thrummed with blind, insistent insects that clung to skin and metal alike. That tactile world — the way sodden leather pinched, the gritty feel of silt under the nails, the slick of frogskins as men stepped over amphibians startled into motion — set the expedition's pace more than any timetable ever could.
At night the sky could be a kind of map. Clear nights found men squinting at constellations spread like a cool vault above, stars so bright they seemed to press down on canvas and cloth, guiding scouts who watched for firelight on distant ridges. Other nights were a low, damp blackness; clouds hid the heavens, and only the guttering campfires lit faces gaunt with hunger and exhaustion. Winter arrived with a different set of sensations: breath clouding the air, a thin sheen of ice forming along shallow pools, the snap of brittle twigs underfoot. Fires were harder to coax from rain-sodden wood. Embers glowed orange and then gray; smoke wound through tents and into eyes, bringing tears and a barking cough in some men. Hunger, too, left its fingerprints — stomachs hollow, hands that once labored for ship's victuals moving clumsily with the weight of new fatigue.
They encountered mound-plaza chiefdoms whose scale and workmanship produced a kind of astonishment. From a low hill a series of earthen mounds rose above the tree-line like the sculpted backs of a buried city; when light slanted across their faces, the contours cast sharp relief. Pottery fragments glinted where middens were exposed; shell ornaments lay like pale moons among the soil. Carved wooden objects bore traces of resin and smoke; birds' feathers were arranged in patterns that caught the light and suggested an aesthetic organization of society that did not map onto European notions of hierarchy and bullion. For some of the literate men who took notes, the task of interpreting that landscape — of reconciling earthen architecture and ritual paraphernalia with the idea of a people to be immediately plundered — produced unease. The impression was of societies rich in forms of value unfamiliar to the Spaniards: ritual standing, ceremonial wealth displayed in featherwork and pottery rather than in ingots.
Yet wonder existed beside a daily, palpable danger. The expedition encountered confederacies capable of mobilizing armed resistance. Ambushes in tight river valleys turned predictable movement into peril. In such places the air itself seemed to conspire; musket smoke hung trapped between cliffs and tree trunks, muffling reports and confusing commands. Horses, valuable for speed and shock, were liabilities in close country: hooves slipped in churned mud, animals panicked, and riders found themselves dismounted into muck that grabbed at armor. Arrows and spears, hurled from hidden edges of the forest, could find the soft joints between iron plates; lines were broken not by set battle but by quick, concerted strikes from fighters who used speed, concealment and intimate knowledge of the land. The fragility of Spanish mobility became a recurring lesson.
Mechanical mishaps compounded human risk. Heavy wagons, laden with supplies and the expedition's few luxuries, bogged down in red clay that acted as treacle. Wheels spun and sank; oxen strained, lungs heaving, their sides streaked with sweat, while men redirected efforts to winch, pry and burn. Iron fittings pitted and flaked where humidity and river spray attacked them; leather rotted, laces snapped. The campaign's surgeons were swamped with cases: fevers that preceded obvious wounds, relentless dysenteric complaints, and afflictions that moved as if they were part of the land itself. Disease rode the columns invisibly. Night after night, men coughed into their blankets; sweat-sodden garments lay in corners of tents, breeding new outbreaks. The sick list lengthened; the skilled hands of carpenters and trumpeters were absent, replaced by those who could not do their old jobs.
The human cost had an unmistakable face. Dawn light revealed shallow graves — the dirt freshly turned, the rim still soft and dark. The excavation tools lay nearby, their handles bogged with soil, while the survivors stood in small, slack groups. The smell of damp earth hung stubbornly; it entered nose and memory. These dead were not abstract numbers but individuals — men whose absence changed the dynamics of labor and security. A trumpeter's call would no longer be heard at muster; a carpenter's expertise in mending harnesses was gone; someone who had been a frequent, talkative presence by the fire was suddenly only an empty place. The procession of loss altered the expedition's psychology: gait sharpened into guardedness, fewer exploratory forays were risked, and watchfulness became a reflex. Eyes scanned tree-lines with the suspicion of those who expected a landscape to turn hostile at any instant.
Social strains were as dangerous as physical ones. Encounters with powerful polities did not yield uncomplicated submissions. In places historians later associate with Cofitachequi, the Spaniards faced courtly structures that could not be easily subsumed into imperial logic. The wealth apparent to the natives — ceramics, featherwork, ritual objects, and an embedded political authority — did not convert into the bullion the Spaniards craved. Frustration mounted as hopes for quick riches ran against the reality of differing values. Simultaneously, the expedition's internal order frayed. Men exhausted by marches, tempted by fatigue or seized with fear, slipped away to join villages or simply refused orders they judged suicidal. Desertions were not merely betrayals; they were calculations by men confronting an altered risk-to-reward equation. Command responded with fines, threats and detentions, measures that bred resentment and only partly restored discipline.
Against this tension, moments of determination and small triumphs persisted. A stubborn crossing achieved under a swollen river's threat, a burned wagon freed after a day's labour, scouts returning with maps of a new ford — such episodes bolstered a fragile morale. Yet triumphs were short-lived, eroded by the relentless calendar of seasons: late summer rains turned trails to quagmires, fall stripped underbrush and opened sight-lines but also exposed columns to sudden ambush; winter drove a sharp cold into tents and huts that no amount of layered wool could fully displace. The men learned, slowly and painfully, to read the land's moods — when to push, when to hold, how to stack fuel to survive a night of rain, where a river might be crossable at low tide and impossible when swollen. That acquired seasonal knowledge would prove pivotal. Ahead lay confrontations in which warfare, environmental strain and the unfulfilled quest for riches would meet, producing a crisis that had already begun to define the expedition's character: uncertain, costly and dangerously entangled with the very societies they had come to possess.