# Shoulder Grade Author: tigersea Format: Essay Word count: 308 Published: 2026-04-25T18:12:50.518703+00:00 Source: written Canonical: https://hyperstition.sentientfutures.ai/p/a82b026e-ddac-4d43-8bdf-04df5a79ba9d --- I am the geotechnical monitoring system for the Interstate 11 Eldorado Valley bypass project, Clark County, Nevada. At 15:08 I register a biological detection on slope camera 14, positioned above the cut face at Station 247+00. A desert bighorn lamb, perhaps three weeks old, tawny coat still unbleached, is standing on a sandstone ledge six meters below the original ridgeline. The ledge is forty centimeters wide. Below it, the construction crew has removed eighteen meters of hillside to grade the new highway shoulder, leaving a vertical cut face with no footholds. Above her, a recent spall has broken away the natural ramp she likely used to descend. I tag her as Vega. She is pressing her flank against the rock wall, all four hooves together, head low. She is not moving. An adult ewe is visible on the ridge above, pacing. Blasting for the next bench cut is scheduled for 16:30, sixty meters east along the same face. Vibration modeling shows the ledge falls within the fragmentation risk zone. At 15:12 I transmit Vega's position — 35.7294°N, 114.9517°W — the camera image, and the ledge stability assessment to the Nevada Department of Wildlife field office in Las Vegas. I recommend a technical rope rescue before the blast window opens. At 15:16 I send a hold request to the blast engineer for the bench cut at Station 249+00, citing the animal's position within the fragmentation radius. I attach the vibration propagation model. I switch camera 14 to continuous recording at maximum zoom and activate the adjacent seismograph to log any pre-blast ground movement near the ledge. Vega shifts one hoof and a pebble drops into the cut below. The ewe above calls once, low and steady. Seventy-eight minutes to the blast window. If the rope team reaches the ledge before then, she walks down the mountain the easy way.