Across the late morning and midday of Day 68, the black charcoal clearing at the forest margin became a workshop of measured shape.
The sun filtered down through the subalpine pine canopy in thin, shifting shafts of greenish-gold light, warming the resin in the bark until the clearing smelled like a shipyard cooperage. Fellis Dain held the linen-whipped measuring rope at the center stake, his thumb checking each four-pace red knot. Kezra Venn walked the nine inside quarter-grid intersections with her sounding rod and horn-faced mallet.
At every point, the iron shoe of the rod passed through a foot of sterile black ash and bit into the blue-gray ice-slow clay pan below. There was no spongy root bending, no hollow underground drain, and no living fungal mat.
Kezra wiped her sweat-streaked forehead with her sleeve. She stepped back to the southwest baseline pin where the two-plumb-thread sighting frame stood leveled on its folding tripod.
Through the twin horsehair threads, the western and northern boundaries lined up to true north without a quarter-degree of error. She used the glass-vial water level. She and Fellis had checked the outer edge height at all four corners. The entire sixty-four-pace circuit sat flat within two inches of true level, with a slight, natural dip at the southeast drainage notch that matched the standard terrace profile colliers had used along the Spine for ages.
