I'd set off from Berlin with the sort of confidence that only comes from not bothering to properly check the directions. The sat nav had other ideas, naturally, and somewhere around Wandlitz I found myself on a road that grew narrower, then gravel, then essentially a suggestion between two fields. My partner, ever helpful, observed that the pine trees looked "very Brandenburg" as if this justified our increasingly agricultural detour.

The mishap came at a T-junction that appeared to be a private farm track. I reversed to turn around, misjudged the width by roughly the entire length of a rear bumper, and deposited us neatly into a drainage ditch. Not dramatically. Just... embarrassingly. A farmer in an ancient Trabant appeared from nowhere, laughed heartily, and produced a tow rope with the practised ease of someone who'd done this before. We exchanged no more than twelve words of shared German-English, but his wave as we rattled off felt genuinely warm.

Hafendorf Zerpenschleuse revealed itself gradually, which seems fitting for a place that doesn't shout about itself. The holiday home sat among similar wooden chalets, all angled toward the Woblitzsee with the self-conscious arrangement of people who know they've lucked into something. Ours had that particular stillness of lakeside properties - not silence exactly, but water-lapping, bird-arguing, distant-motorboat stillness.

I dumped the bags with the theatrical exhaustion of someone who'd driven what should have been an hour into something closer to two and a half. Then I did what I always do when arriving somewhere new and slightly stressed: went for an aimless wander without map or purpose.

This is how I found the first hidden thing. A path behind the chalets, barely marked, that threaded through birch scrub and emerged at a smaller lake I'd not seen on any overview. No beach, no facilities, just a wooden platform someone had built for fishing and a heron that regarded me with prehistoric indifference. I sat there until the light changed, feeling the particular foolishness of someone who nearly missed something wonderful because they were sulking about a bumper.

The next morning we set out deliberately to get lost. The area around Zerpenschleuse is threaded with waterways and forest tracks that don't always correspond to phone maps. We followed a canal path until it simply stopped at a lock mechanism, rusted and beautiful, where a man was painting his narrowboat in slow, meditative strokes. He told us - this is my reconstruction, my German being functional at best - that the lock hadn't operated in years, that the water levels had changed, that routes existed now only in memory. He pointed us toward a path through reeds that his gesture suggested was unofficial, probably private, definitely worth taking.

We took it. The reeds gave way to oak woodland, then to another clearing with a wooden hut selling smoked fish from the lake, operating on honesty-box principles. The fish was extraordinary. The woman who appeared to replenish the box - I never saw her face, just her retreating back - seemed like a figure from folklore. We ate sitting on a log, watching dragonflies conduct their complicated business.

By afternoon we'd found a swimming spot where locals apparently gathered, though "gathered" overstates it. Three teenagers on a rope swing, an older woman reading on a towel, all of us pretending not to notice each other in that particularly German way that feels courteous rather than cold. The water was the temperature of pleasant shock, the bottom weedy and mysterious.

I thought about the farmer, the heron, the lock-keeper with his obsolete knowledge, the fish-vending phantom. I'd arrived annoyed, embarrassed, narrowly focused on the wrongness of my journey. The getting lost had been the point all along. Brandenburg doesn't present itself; it waits for you to stop demanding that it perform.

That evening we cooked simply and sat on our small deck as the light went. My partner, who'd been right about the pine trees, didn't mention the bumper once. Some things, once found by accident, recalibrate what you thought you were looking for.