The barometer had not moved in eleven hours.
Vance noted it in the log without comment, tapped the glass once with a knuckle — standard — and confirmed the reading had not changed. He set the pen down and looked at the open door.
Not the door. The survey door, the one that mattered, was thirty meters north, visible from the camp’s edge as a shimmer between two limestone pillars that had no business standing here on an otherwise flat coastal plain. He meant the tent flap. Outside it, Officer Maren Solis was driving a measurement stake into the ground with the heel of her boot, her back to him, her posture expressing nothing in particular.
He picked up the pen.
0614 hours. Barometric reading static at 1003.2 hPa for the eleventh consecutive hour. Wind: nil. All survey equipment nominal. Personal note: nil wind is procedurally unremarkable. Static barometry for eleven hours is not. Cause not yet determined. Recording and continuing.
She came in while he was closing the log. She was carrying the anemometer, which she set in its case, and the small leather notebook she used for field sketches. Her boots were chalky at the toe.
“Stakes are in,” she said.
“Any change at the threshold?”
“Shimmer’s the same. Maybe a little thicker.”
“Thicker.”
She considered the word. “Deeper. Like looking through ice with more ice under it.”
He wrote that down, using her words.
Solis was six months into her second posting. She had good instincts and she wrote poor reports, not because she observed badly but because she tried to translate everything into the standard categories before she was ready to, and lost the original sensation in the process. He had been collecting her raw descriptions since Posting Seven. She would probably learn to suppress them on her own given another two years and he wasn’t sure that would be an improvement.
“We should go through,” she said.
“We should review the overnight readings.”
“I’ve reviewed them. The static’s the overnight reading.”
He held up one finger. She waited. He opened the survey register to the pre-entry checklist and worked down it, not slowly, not hurrying. Tether anchor. Atmospherics. Contact schedule. Sample containers. Charcoal filters in the respirators, replaced. Door width, door height, last measured at 0500 — she took the tape from its peg by the door flap and went to take the 0600 reading without being asked.
She came back. “Same.”
He initialed the entry. He drew a line under it.
“All right,” he said.
The limestone pillars were old. The geological survey had put them at eleven thousand years, possibly older, which was not in itself unusual — doors sometimes opened in places that had been doors a long time, places that had organized themselves around the fact — but these pillars had been worked. Not recently. The tool marks were nearly lost, just a regularity of surface that caught the low light wrong. Solis had found it on day one, crouching to look sidelong at the stone with the focused animal attention she brought to things that didn’t fit.
They had not yet been through.
Procedure allowed for forty-eight hours of exterior survey before first entry. They were at thirty-one. Vance had filed the extension request with Central at 0200, citing the barometric anomaly, and Central had approved it in twelve minutes, which meant a duty officer was awake and paying attention, which meant someone at grade thought this find was interesting.
He didn’t know if that was reassuring.
The shimmer sat between the pillars like a held breath. Not his metaphor — Solis had written it in the overnight notes, crossed it out, written it again in smaller letters, and left it. He had initialed her crossing-out and then her reinstatement. Both seemed correct.
He checked the tether one more time. The line ran back to the anchor stake, bright orange against the pale chalk, forty meters of it. Standard load rating. Solis watched him check it and did not check her own, which meant she’d already checked it three times.
“Entry log,” he said.
She read it aloud from the register, her voice flat and exact. Date. Time. Officers. Equipment inventory. World designation: provisional, pending recommendation. Door type: permanent, structural. Door dimensions: 1.9 by 1.2 meters. Atmospheric comparison: home-side, 1003.2 hPa, still. Door-side, unsampled.
“Door-side, unsampled,” he repeated, completing the form.
The shimmer deepened as they stepped up to it, or seemed to. The chalk plain was entirely silent. Not the silence of early morning, which has texture, but the silence of something waiting to exhale.
Vance wrote the entry time in the log, capped the pen, and tucked it in his breast pocket.
They stepped through.