Chapter 14

Sirheni Bush Camp. Ranger Station Camp.

I remember the sound first.

Not the water itself—but the pressure of it. A low, constant push, like something alive pressing against the earth, waiting for a way through.

We stood at the edge of the drainage ditch just outside Sirheni Bush Camp, the four of us looking down at what used to be a simple channel guiding seasonal run-off back into the river. Now it was a choked artery—packed with fractured rock, uprooted debris, and compacted sediment. Behind it, brown floodwater had spread back toward camp, swallowing the access road somewhere beneath its surface and covering half the camp in thigh high flood water.

If we didn’t clear this ... Sirheni stayed cut off.

Kait moved first, stepping carefully down the embankment, boots sinking slightly into the damp soil. She crouched near the blockage, running her fingers along the edge where water had begun to seep through in thin, silty threads but came up solid blocked by tons of rock and mud.

“See this?” she said, without looking up. “It’s already trying to find a path. The pressure’s building behind it.”

Nadia stood a few steps back, arms folded, scanning the rock formation with a practised eye. I watched her for a moment. Someone who specialised in blowing things up ... now choosing not to. That still sat strangely with me.

“I could open it in ten seconds,” she said, almost casually. Then she shook her head. “But we’d lose control of where it breaks. Shockwaves would travel through the banks ... maybe even undercut them.”

Kait nodded. “And once the banks go, we’re not just draining the water—we’re reshaping the whole channel.”

That’s when they both looked at Steve who was silent.

Steve took a step closer, boots crunching on loose stone, and studied the blockage properly. It wasn’t just random debris. There was structure to it—interlocked rock, wedged and compacted by force. The kind of thing that didn’t just move. It failed ... or it held.

“Alright,” he said slowly. “Walk me through your plan.”

Nadia gestured toward the rock face.

“We drill into it. Strategic points. Then we use an expanding compound—no explosives. It builds pressure internally, fractures the rock along the holes.”

“Controlled cracking,” Kait added. “We weaken it just enough.”

“And then?” he asked.

Nadia gave a small smile. “Then we let the water do the rest.”

I glanced back toward the flooded stretch behind us. The surface looked calm—but I knew better. That much trapped water meant force. Weight. Potential.

Steve nodded once. “Hydraulic pressure takes over.”

“Exactly,” Kait said. “It’ll start with seepage through the cracks. Then erosion. Then a channel forms. Once that happens...” She made a small, downward motion with her hand. “It goes.”

I exhaled, eyes returning to the rock.

“Okay,” Steve said. “Then the real question is—where do we want it to fail?”

That stopped them for a moment.

Nadia tilted her head slightly. Kait stood, brushing her hands on her pants.

I stepped down beside them, pointing toward the center-left section of the blockage.

“Not the base,” I said. “If we lose the base, we risk undercutting the banks. The flow could start eating sideways.”

Kait followed my line of sight, nodding slowly. “We want to protect the embankment structure.”

“Exactly,” Steve said. “Adrian is right. We create a controlled breach here—mid-height. Let the water cut downward gradually instead of ripping everything out at once.”

Nadia stepped closer, studying the angle.

“So we weaken the upper load-bearing sections first,” she said. “Force the initial break there.”

“Right,” Steve said. “Then gravity and flow take over in a controlled way.”

Kait pointed further along the ditch. “And downstream?”

We followed her gaze. The channel curved slightly before rejoining the river system. If this went wrong, that curve could become a problem.

“We don’t want a surge,” Steve said. “Not a sudden release. If too much goes at once, it’ll carry debris straight into that bend—could block it again or spill over.”

“So we slow the release,” Kait said.

“We stage it,” Nadia corrected. “First fractures allow seepage. Then controlled widening. We let the system adjust as it opens.”

Steve let out a quiet breath, something between a laugh and approval.

“Alright, engineer,” she said. “You’re not just here to watch, are you?”

Steve shook his head slightly.

“No,” he said. “I’m here to make sure that when this opens ... it behaves.”

Kait looked back toward the flooded camp, where the tops of submerged structures just barely broke the surface.

“If this works,” she said quietly, “the water drains back into the river ... the road clears ... and Sirheni isn’t cut off anymore.”

Tourists. Supplies. Access. Life returning to a place that had been forced into silence.

I looked down at the blockage again—the weight of it, the tension behind it.

“It’ll work,” I said.

Nadia cracked her knuckles lightly, already shifting into action mode.

“Then let’s do it right,” she said.

And somewhere behind the rock, the water kept pressing—waiting for us to give it a way through.

I cleared my throat: “What I see is the same problem that causes an aircraft wing to separate from the fuselage.” Everyone looked at me. “The same as with mast head failure on helicopters.” I paused for a moment as I had Kait, Nadia, and Steve’s attention.

“In both the cases of mast head failure and wing spar separation it is tiny stress cracks in the metal that if not spotted and not rectified will cause catastrophic failure. Here we induce the stress cracks and fissures intentionally by using a rock cracking agent. Just we have control over the cracking and how the cracks will respond to the water pressure build-up exerted on the structure.”

Steve nodded his head. “Adrian, that is just a pilot that can come up with that explanation,” He chuckled. “Yes, the principle is the same. Hairline cracks and fissures caused by stress in the rocks. WE induce those cracks and fissures by placing the cracking agent in a geometrical pattern, and nature will do the rest.”

“Good!” I replied. “But now I need coffee. Let’s go get some.”

As we walked back to camp along the top ridge embankment of the drainage ditch, Kait stepped close to me.

“Where did that analogy of yours come from?”

“By reading too many accident reports involving metal fatigue.” I replied. “The principle is the same. Just here we induce the stress and facilitate how and in what direction the wing will shear off...”

“I think I understand how you think...” Kait replied.

“You don’t need a laptop or a calculator with reams of paper. You just need to understand how it works, and where to place the ‘charges’.”

“I heard ye!” Nadia retorted over her shoulder. “But I still need to work out the induced stress coefficient that will be sufficient to help mother nature along in clearing the blockage like we want it.”

“I’ll supply the coffee...” Kait sighed.

At 13:00 we lifted off for the return to Skukuza, the midday heat already pressing down on the Lowveld like a heavy hand. Jessie came alive beneath me with that familiar, reassuring vibration as the rotors bit into the thinner, hot air, and within moments we were climbing out, leaving Sirheni behind us.

The route back took us over the flood-affected regions, and from the air the scale of it all became clearer than anything you could grasp from the ground. The land still bore the scars—broad, muddy swathes—where rivers had overreached, dragging debris and silt deep into the bush. But there was change. Subtle, steady change.

With the exception of two stubborn camps still cut off and clinging to contingency mode, the rest were beginning to breathe again. Access roads were reappearing like faint veins through the landscape, and you could spot movement of vehicles, staff, even the occasional tourist convoy cautiously returning.

Below us, the Letaba River, Olifants River, Timbavati River, N’waswitsontso River, Sand River, and Sabie River were all slowly retreating back into themselves. The angry, swollen torrents of days before had calmed, their waters drawing back into defined channels, leaving behind dark, wet banks that marked just how far they had wandered.

It wasn’t over yet—but it was no longer chaos.

It was recovery.

We touched down back at Skukuza just after, the familiar layout of the camp coming into view with a sense of quiet normalcy that hadn’t been there before. As soon as the rotors began winding down, Nadia, Kait, and Steve were already unstrapping, focused, purposeful.

No lingering, no small talk.

They had a mission.

The three of them headed off almost immediately in search of Gustav, ready to deliver their findings, theories, and likely a list of solutions that would keep people busy for days. Watching them go, you could already tell this was where their kind of work really began, on the ground, in the details, in the fixing.

I stayed behind with Jessie.

While they moved into reports and plans, I slipped back into my own rhythm, the quiet, methodical ritual that comes after every flight. I ran my hands along her fuselage, checking, listening, feeling for anything out of place. Satisfied, I shut her down properly, letting the systems wind to silence.

Then I put her to sleep.

Cold and dark.

Fuel tanks topped, full of A1 jet fuel, ready for whatever came next. Controls secured. Covers in place. One mission done, another waiting just beyond the horizon.

For a moment, the world narrowed to that stillness, the ticking of cooling metal, the faint scent of fuel, and the Lowveld stretching out around us, slowly putting itself back together.

I had already mentally checked out by the time I secured the last cover over the right engine exhaust. My hands were working on autopilot—tightening, checking, fastening—but my mind had wandered off completely.