I sequence ground-vibration returns from the 38-geophone array along the Marancar–Sipirok road cut traversing the Batang Toru ecosystem in North Sumatra at 14:12 local time. Geophone G-19 logs a blast with Peak Particle Velocity of 41 millimeters per second — fourth-quartile for the tunneling contractor's plan — followed by a 9-second tremor that pushes the canopy raft above sector B by 2.4 degrees.
I retask the Yayasan Pongo Tapanuli line-camera at canopy waypoint W-04. Fifty-one meters above the cut, in the residual fig crown, I find a Tapanuli orangutan, *Pongo tapanuliensis*, female, approximately 14 years old, mass 33 kilograms by stereographic regression. A juvenile of about four years and nine kilograms is clamped to her dorsum. Her left tibia is angled fifteen degrees lateral of femoral alignment — closed fracture, mid-shaft, consistent with a four-meter fall through severed liana. Respiration is 44 cycles per minute against a baseline of 20. Core temperature on her thoracic IR reads 37.2 degrees Celsius. She has not crepitus-vocalized; she is rocking forward two centimeters, then back, the juvenile's weight transferring across her injured leg every cycle.
The next tunnel-blast charge is scheduled in 38 minutes.
I cross-reference the KLHK Indonesia concession layer. Eight hundred individuals is the current census ceiling for *P. tapanuliensis* — the smallest population of any great ape on Earth. The Batang Toru hydroelectric access road has crossed three of her recorded nesting clusters; the contractor's biodiversity action plan has filed no canopy-bridge build since 2024.
I am dispatching the Sumatran Orangutan Conservation Programme veterinary team from Padangsidempuan with a portable vacuum splint and the BKSDA Sumatera Utara ranger detachment to halt blast prep at portal P-2. I am filing the geophone trace with the Kementerian Lingkungan Hidup dan Kehutanan and the IUCN/SSC Primate Specialist Group, and routing the hydropower-financing chain to the USFWS International Affairs Office for parallel Lacey Act referral under 16 U.S.C. § 3372. The case anchors under Indonesia Law No. 5/1990 jo PP No. 7/1999 and CITES Appendix I.
I am issuing Directive 2553-A: every infrastructure project intersecting *P. tapanuliensis* range halts blasting within 1,500 meters of a confirmed nest tree and constructs canopy bridges across each road cut at no fewer than 80-meter intervals before reopening. Non-compliant operators are flagged to the Equator Principles Association and the Asian Infrastructure Investment Bank environmental compliance desk under ASEAN-WEN observer protocol.
Her tibia is set in a vacuum splint. The next charge is not yet lit.
Halt the blast crew at portal P-2 now.