The drafting paper Yseld unrolled was heavy, flax-heavy ledger stock that had survived two seasons of border drizzle inside an oiled tin map case. Its surface was scored with faint blue grid lines, ruled ten squares to the inch with a dry-point brass marker.
Yseld didn’t begin by drawing mountains. She dipped a blunt piece of willow charcoal into melted candle fat to keep the dust from smudging, took her six-inch wooden ruler, and laid a heavy level baseline across the top of the parchment.
“When junior adventurers plan an expedition in a tavern,” Yseld said, her voice dry and rhythmic as she drew a straight line across the grid, “they draw mountain peaks with sharp little shadows. They sketch dragons in the blank corners and draw a bold red line straight from their hometown to the treasure hoard. They measure distance in days, as though days were coins you could spend without sweating.”
She made twenty-four neat upright tick marks across the line, spacing each tick four blue squares apart.
“The earth doesn’t care about your red line,” Yseld continued. She tapped the charcoal against the paper. “A league on a flat river road is an hour of easy striding with a light pack. A league across fiery scree on Blackglass is three hours of loose shale slipping under your boots, ankle stones battering your shins. Your mule trying to turn downhill every hundred paces because its hocks are scalded by sulfur dust. We’ll measure this march in three real things: miles walked, water carried, and days leftover before your book forgets where home is.”
Kezra pulled her stool closer to the table. She watched the charcoal marks turn into a structured framework. Across the top row, Yseld began writing column headers:
DAY | ROUTE STAGE | SURFACE TERRAIN | DAILY MILES | TOTAL DISTANCE | WATER CARRIED | KILNSTEP AGE
Fellis leaned over Kezra’s shoulder, tracing the first column with his thumb. “What’s our daily march rate? On the county survey road, a freight wagon makes twelve miles before nightfall.”
“A four-mule team with an empty wagon makes twelve miles if the ditches are dry and the driver knows where to water,” Yseld countered without looking up from her ruling. “We’re four people on foot. One of us is leading a pack mule carrying field surgery gear, salt, and grain. Another of us will be stopping every mile to take compass back-bearings and verify road alignments with an iron sounding rod. And on the third day out, we leave the county road entirely to climb into the fiery ridges of Blackglass.”
She filled in the first three rows with neat, cramped block letters:
“Days Nine to Twelve: Preparation and departure from Kilnstep. Zero trail miles. Kilnstep age: Days One to Four.
“Day Thirteen: Pottery Lane to the Eastern Pasture Margin. Twelve miles. Flat crushed limestone road, good under-road drains, farm ditches. Kezra establishes the nonstop walked thread from the village boundary stone. Pace rhythm: four paces to the rod-tap. Kilnstep age: Day Five.
“Day Fourteen: Eastern Pasture to the Roadside Weighing Station. Eight miles. Rising upland grade, rough limestone stone floor, sheep tracks. Half-day march to allow Kezra and Fellis to sound the first potential road parcel at the weighing station. Kilnstep age: Day Six.”
Yseld stopped her charcoal at the fourteenth day and looked up at Kezra.
“Now look at the numbers. On Day Fourteen, we’re twenty miles east of this kitchen. If you map a sixteen-pace Plot square at that weighing station, how old is the survey in your mother’s yard?”
“Six days,” Kezra answered, calculating the subtraction in her head. “The limeworks parcels will be six days old. The connecting walked thread will also be six days old.”
“Which leaves twenty-four days in your freshness window,” Yseld said. “A comfortable margin. You have plenty of time to test an exchange or turn around and walk back if someone comes down with camp fever. But now we look at what lies beyond the weighing station.”
She dragged the charcoal eastward across the blue grid. She drew a sharp, jagged band of slanted hatching that represented the rising spine of the Blackglass ridges.
“Day Fifteen to Day Nineteen: The Blackglass Cross. Forty miles of dark rock scree, knife-edge fiery dikes, and dry washes. No road. No farm wells. The only water comes from bitter-salt seep-pools in the lower gullies that must be boiled and filtered through charcoal to keep from burning your gut. On Blackglass, eight miles is a brutal day’s labor. Your pack straps bite into your collarbones, your boot soles shred against fiery glass. You can’t walk three hundred paces in a straight line without skirting an old lava tube.”
“And if we stop to survey on the ridge?” Fellis asked.
“Every day we stop to lay out cords, sound deep rock, and chisel three corner anchors is a day with zero eastward progress,” Yseld answered bluntly. “If we spend Day Seventeen mapping a Step shelter on the goat route, that’s one full day added to the clock. By the time our boots drop down the eastern scree of Blackglass into the Saltglass flats on Day Twenty-Two, we have marched seventy miles. And your home address in Kilnstep is fourteen days old.”
Paxa adjusted her reading glasses, leaning over the ledger with her brass pocket rule. She drew a line down the middle of the calendar grid, dividing the days into two distinct halves.
“Fourteen days is the halfway mark,” Paxa noted, her medical care cutting through the geographical detail. “A human mind tends to treat the midpoint as a zone of comfort. In an expedition, the midpoint is the point of maximum hazard. At fourteen days out, you have exactly sixteen days of freshness leftover on your home parcels. If you intend to use Kilnstep as an emergency retreat, you have sixteen days to either return on foot or complete your business in Saltglass and establish a new permanent anchor.”
“And what’s our business in Saltglass?” Kezra asked, looking at Yseld.
“Joric Thane’s stone caravan,” Yseld said, sketching a sprawling, flat basin on the southeastern corner of the parchment. “Saltglass is a bitter salt depression twelve miles wide, bordered by commercial limestone quarries and salt-drying pans. Joric Thane runs twenty freight wagons and fifty mules between the Saltglass quarries and the central markets. He’s forty-eight years old, he knows every road-agent, toll-clerk, and land-mapper between here and the capital. His drivers carry brass tokens stamped with Davren’s split triangle.”
Yseld tapped the charcoal against the desk, leaving a dark smudge on the paper.
“We don’t march to Saltglass to sightsee, Kezra. We march there because Joric Thane has seen Davren’s trail. We need to know who stamped those tokens. There, they were spent, and what pass your brother took into the Spine. But Joric is a merchant, not a philanthropist. He won’t hand over trade ledgers for a smile. We’ll have to spend at least five to seven days at the waystation negotiating with him, inspecting his route sheets, and possibly repairing a section of quarry road to earn his goodwill.”
Kezra stared at the calendar grid. She watched the days gather like weight on a mid-air cable.
“Seven days in Saltglass,” Kezra whispered. “Fourteen days to get there. Seven days in camp. That brings us to Day Twenty-One.”
“Day Twenty-One,” Yseld agreed, her voice dropping into a somber, unbending rhythm. “On Day Twenty-One, your Kilnstep home address is twenty-one days old. You have exactly nine days left before the thirty-day walked thread snaps. Nine days. If you want to keep this kitchen as a live destination, you must begin marching back to Kilnstep on Day Twenty-Two. If you delay until Day Twenty-Five, you can’t walk seventy miles back across Blackglass in five days. The thread will break while you’re halfway across the fiery scree. Your home address will die on the page.”
Fellis wiped his palms on his work apron, looking troubled. “Can Kezra not refresh the thread from Saltglass? Walk twenty paces back and forth along the road to reset the timer?”
“No,” Kezra said. She shook her head as the clockwork logic of the notebook asserted itself in her thoughts. “The rubric is total: nonstop unbroken route personally walked by the map maker within the last thirty days. Walking in circles inside Saltglass only refreshes the ground inside Saltglass. It doesn’t shorten the seventy miles of physical distance between Saltglass and Kilnstep. Every mile of that connecting line has its own single age stamp. The mile just outside Kilnstep’s gate was walked on Day Thirteen. On Day Forty-Three, that first mile turns thirty-one days old. The thread snaps at the oldest link.”
“It’s an hourglass with running sand,” Paxa said, resting her chin on her hand. “Every step we take away from Kilnstep turns another grain of sand. When the last grain falls, the connection is broken. You can’t hold onto the past while marching into the future unless you’re willing to walk in loops.”
Maud sat on the stool opposite Kezra, her arms folded tightly across her apron. She looked at the gridded calendar with the cold, assessing eye of a woman who had spent her life calculating fuel loads for winter firings.
“Then don’t try to hold onto it,” Maud said.
Kezra looked up at her mother in surprise. “What do you mean, Mother?”
“I mean that this village isn’t an anchor tied around your neck,” Maud said, her voice quiet, steady, and without self-pity. “You’re marching east to find what happened to your brother, not to keep a private doorway open so you can come home to sleep in your own bed when your feet hurt. If you reach Saltglass and find that Davren’s trail leads north into the high Spine, you can’t spend every third week hiking back to Kilnstep just to keep the ink fresh on my clay pit.”
She leaned forward, tapping the rough pine table with her knuckles.
“When a bird leaves the nest to forage in the high scrub, it doesn’t drag a length of twine tied to its mother’s leg. It flies where the seeds are. If your thirty-day thread reaches its end in Saltglass, let it snap. Retire the Kilnstep parcels from your book. Free up the address slots. Anchor yourself to the ground where you stand, find Joric Thane’s route, and keep your face pointed toward the mountain.”
“Mother,” Kezra said, her throat tightening, “if I retire the home parcels, I can’t jump back to protect the village if soldiers come looking for the map.”
“We protected this village for sixty years before you crawled under the drying shed, Kezra Venn,” Maud replied, her eyes flashing with fierce, maternal pride. “And we’ll protect it while you’re gone. We have stone walls, good neighbors, and an iron bell on the kiln post. You do your work on the road, and let me do mine here.”
Yseld smiled—a genuine, wolfish grin that softened the harsh lines around her mouth. She took her charcoal and drew a bold circle around Day Twenty-Two on the calendar.
“There’s our first strategic decision point,” Yseld said. “Day Twenty-Two at the Saltglass waystation. When we reach that circle, we inspect our boots, our water, and our information. If Davren’s trail ends there, we walk home before the thread snaps. If the trail continues north into the Spine, we close the book on Kilnstep, clear the slots, and follow the track into the rock.”
Kezra touched the heavy paper of the calendar. The grid was stark, demanding, and utterly devoid of comfort. But beneath its rigid columns lay a huge, practical clarity. For the first time since she had failed her adventurer check on the Spine, the journey ahead was not a terrifying fog of hope and guilt.
It was an equation. And like every honest equation, it could be solved one mile, one pace, and one day at a time.