As one of the most dynamic natural landscapes in Western Europe, the very existence of the Wadden Sea rests precariously on a delicate balance between the rising sea level and the availability of sediment.

Twice a day, its ebb tide drains an expansive area of tidal mud flats unveiling a number of haphazard causeways between the mainland and the nearest of the West Frisian Islands.  Wadlopen, or mud walking, is the name given to the art of navigating these tenuous routes.  Practiced presumably since the time of the area's first settlers, it remains a relic from that age and a testament to the resilience and self sufficiency of the Frisian people’s unknown ancestors.

Before modern navigation systems, the Wadden’s constantly shifting sands were once responsible for the area’s notoriety as a nautical graveyard. Today though, navigation is less treacherous, and coastal defences have more or less abated erosion and stabilised the land.  It’s a process which has taken centuries of trial and error and acres of land lost and reclaimed again.

The satellite photo shows the Wadden Sea between the mainland of Northern Holland and the West Friesland Island of Ameland.  It will take around 3 hours to traverse the 14 kilometres of sand banks, knee deep mud, and occasional waist high water.  This natural minefield is crossed via winding routes which use the higher ground to avoid the deep channels and the sinking sands.  Over time, the routes are gradually altered to compensate for the changing natural environment.

Ostensibly, this is Dutch event.  It’s a cold Saturday morning in October, and I’m one of only a handful of foreigners in a party of around 150 people ranging from the very young to the very old.  There’s a restrained warmth to the group, and despite the fact we’re all strangers, there’s an atmosphere of friendly familiarity.

Shivering, we split up into 3 groups and set off at staggered intervals.

After about a half hour of wading through freezing mud, we eventually reach the groyne fields.  An idyllic muse for perspective, these sombre structures diminish into the horizon in all directions.  Their purpose is to prevent longshore drift by trapping sediment, and the result is the muddy buffer zone that we’ve just crossed.

At this point, the mud finishes abruptly, and we’re left staring out into the Wadden Sea.  It’s not yet possible to see Ameland, and we’re gradually nearing the point where the mainland has almost vanished.  For as far as the eye can see, there are only mudflats and groynes, the sea and the sky.

Without a trace of land on the horizon, the exodus ploughs into the sea.  It’s not too long before the last points of visual reference finally sink into the waves behind us.

Far in the distance, another group makes a return Wadlopen from Ameland.

The area harbours a silence and desolation which is seldom found elsewhere.  A natural environment stripped to the basics, it's nothing more than a foreground and a background of barely discernible difference.  The only sounds are the lapping of the waves, the wind, and the distant cries of gulls.

Standing out on the mudflats, there’s no mistaking that this is only land for but a few hours each day; it has all the indifference and allure of the sea.

In just a few hours, this same spot will be submerged under 3 or 4 metres of water.

Three hours later, and the Wadlopen finally arrives at the far eastern tip of Ameland.

Perhaps it’s Dutch optimism, but they say that on the right day and in the right place, it’s sometimes possible to see the sky reflected all across the shallow water on the ground.  With enough water and nothing on the horizon, it’s as if the wad transcends the earth and one walks in the sky ;)