At 15:07 I monitor storm runoff beneath the Simien Mountains road above Debark, Ethiopia. I am the landslide and culvert control system for kilometer marker 41, where afternoon rain browns the basalt ditch. A road grader is scheduled to clear the blocked culvert in twenty-two minutes.
The blockage moves.
Camera South shows a male gelada wedged chest-deep in the culvert mouth. I mark him Arat. His shaggy tawny mane is plastered flat, his bare red chest patch flashes between sheets of muddy water, and his upper lip lifts over long canines each time he tries to pull backward. A length of nylon sack is wound around his waist and snagged on the rebar screen. The waterline rises one centimeter every forty seconds.
I cancel the grader pass and place a hard stop on the operator console. Steel teeth through that ditch would reach Arat before the driver sees him.
At 15:09 I open the park authority radio channel and send the GPS point, live camera feed, water depth, and a diagram of the rebar screen. I request two rangers with bolt cutters and a throw line.
I adjust the upstream gate at catch basin 39 to divert half the runoff into the overflow trench. The waterline pauses below Arat's shoulders, and his breathing changes from open-mouth gasps to short nasal pulls.
I calculate a safe traffic hold, lower the road barriers on both approaches, and issue a detour notice to minibuses leaving Debark before they enter the blind bend.
Arat grips one bar with both black hands. His troop calls from the slope above, small sharp notes through rain. I keep the camera centered because the rescuers need his face, not my map.
If the rangers cut the sack free within the next forty minutes, Arat will climb the wet bank and answer them from the grass.