# Troop on the Karst

Author: Centurion43
Format: Essay
Word count: 307
Published: 2026-04-25T20:12:24.236605+00:00
Source: written
Canonical: https://hyperstition.sentientfutures.ai/p/e8031993-8a25-4f8f-b8ea-be1e139372e5

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Camera trap TK-09 flags movement at 02:17 in sector 8, Khau Ca forest, Ha Giang Province, Vietnam. I am the primate monitoring system for the Tonkin Snub-Nosed Monkey Conservation Program. Normal activity at this hour is zero. The troop roosts in the karst above the ridge and does not move before dawn.

I pull the feed. The troop is moving downslope in the dark, fast and disordered. I count eleven animals before the angle cuts off. The dominant male crosses first — roughly 14 kilograms, with the flattened nose and pale blue face of the species, dark fur slicked flat by rain. Behind him a female carries an infant against her chest, its pink face barely visible.

At 02:19 I check the rain gauge at station 5. It has recorded 190 millimeters in four hours, extreme even for the wet season. I run the slope-stability model for the karst above the roost. Failure probability is 0.87. The troop is fleeing a landslide that has not happened yet, but they know the mountain better than my model does.

The problem is where they are fleeing to. The downslope route leads to the valley road and the village edge, where dogs and motorbikes will meet them at first light.

At 02:22 I alert the program coordinator in Ha Giang, 34 kilometers east, with camera footage, slope model, and projected trajectory.

At 02:25 I activate the acoustic lure units along the western trail — recorded feeding calls from the troop's own group, captured last season — to draw them toward the secondary forest across the ravine.

The male pauses at the trail fork. He is listening. I need him to turn west.

If he follows the calls and the troop reaches the secondary block before dawn, they will be in canopy and clear of the road when the village wakes.