Navigating coastal cliffs with map and compass

Why the cliff path deserves more respect than the beach

There is a particular kind of walker who arrives at a coastal car park with a phone in one hand and a hopeful expression. They have done the beach, they have done the gentle estuary loop, and now they fancy the clifftop. It looks straightforward enough on the screen: a thin line hugging the coastline, a few headlands, a cafe at the far end. What the screen does not show is that cliff paths are among the most confusing terrain in Britain. They fold, twist and double back. They duck inland through gorse, they drop into combes, and they fork at exactly the point where the wind is loudest and your attention is thinnest.

Add sea fret, a low sun, or a path that has quietly eroded since the last time anyone surveyed it, and you have a recipe for a long afternoon. The remedy is old-fashioned and deeply satisfying: a paper map and a compass, plus twenty minutes of practice before you set off.

What to carry, and why paper still matters

Digital mapping is excellent for planning and for confirming where you are when you have signal. On a cliff path you often do not. Signal comes and goes behind headlands, batteries drain faster in cold wind, and a cracked screen at a crucial junction is no use to anybody. A paper map does not need charging, works in gloves, and shows the whole picture at once.

• The right map: Ordnance Survey Explorer 1:25,000 is the standard for coastal walking. It shows field boundaries, paths, cliff edges, slipways and the all-important coastal footpath markers at a scale you can actually navigate from.
• A baseplate compass: Any decent one with a rotating bezel, a magnifying lens and a clear base will do. Check the bezel turns smoothly and the needle settles without sticking.
• A waterproof map case: A few pounds, and it keeps the print legible in drizzle and spray.
• A spare layer, water, and a head torch: Cliff paths take longer than the map suggests. Every experienced coastal walker has finished one in the dark at least once.
• Knowledge of the tide table if your route includes any beach or causeway section, and the local coastguard number saved in your phone.

Reading the map before you walk it

The most useful navigational work happens at the kitchen table. Spread the map out and trace your route with a finger. Note the grid references of the key points: the car park, the first headland, the point where the path turns inland, the pub at the end. Write four or five of them on a small card and keep it in your pocket. That card is your safety net if the map case fogs up.

Pay attention to the shape of the coastline rather than the line of the path. Bays, headlands, promontories and river mouths are enormous navigational aids. Count them as you go. If you have passed two headlands and the map says you should be approaching a third, you know exactly where you stand without touching the compass.

Also mark the escape routes. On coastal walks there is usually a lane, a farm track or a footpath heading inland roughly every mile or two. Knowing where they are turns a problem into an inconvenience.

Taking a bearing: the simple version

A bearing is just the direction you want to travel, expressed as a number of degrees from magnetic north. Here is the whole technique.

• Place the map flat and find your current position and your target. Line the long edge of the compass base along the line between them, with the direction-of-travel arrow pointing at your target.
• Hold the compass steady and rotate the bezel until the orienting lines inside it line up with the north-south grid lines on the map, and the orienting arrow points to the top of the map.
• Read the number at the index line. That is your grid bearing.
• Now correct for magnetic variation. In the UK this is currently a small easterly variation, and the figure is printed in the map legend. Follow the instruction on the map: for most of Britain you add the variation to convert a grid bearing to a magnetic one.
• Hold the compass flat in front of you, turn your whole body until the red end of the needle sits inside the orienting arrow, and walk in the direction the travel arrow points.

Pick a landmark on that bearing — a distinctive rock, a gap in a hedge — walk to it, then take a fresh bearing. Short legs beat long ones, especially on uneven ground.

Using the compass on the move

You will rarely need a precise bearing on a well-marked coastal path. You will need it in four situations: leaving a car park onto open access land, crossing a featureless clifftop plateau, walking off a headland in poor visibility, and confirming that the path forking right is the one you actually want.

In mist, the technique is to walk on a bearing along a handrail — a wall, a fence line, a stream — rather than across open ground. Handrails catch mistakes early. If you drift off the wall, you notice within a few paces, not within a mile.

And if you genuinely cannot place yourself, stop. Walking on in the hope that something familiar appears is how people end up on the wrong side of a headland with the light going.

Coastal conditions that change the maths

Cliff walking is slower than inland walking. Expect to cover perhaps two miles an hour with stops, less on steep combes with steps. Wind on an exposed headland will slow you further and make map handling a two-person job, so fold the map to the section you need and keep it in the case.

Sea fret can arrive within minutes and reduce visibility to a few dozen metres. Gorse and bracken can hide a path entirely in late summer. Eroded sections sometimes leave the mapped line a metre or two from the actual trodden route, so trust the ground but check it against the coastline shape.

Set a turnaround time before you leave the car and stick to it. Say it out loud to whoever is with you. That single habit prevents more coastal epics than any piece of kit.