The Tawny Tarn Fell Walks

Understanding Map Contours for Easier Moorland Navigation

Why Contours Matter on Open Moorland

On a featureless moor, a path can vanish under heather and bog in a few strides. Contour lines are your most reliable guide to what the ground is actually doing beneath your boots. They tell you where the land rises, where it falls away, and where a safe line of travel lies. Get into the habit of reading them before you leave the car park, and you will spend less time fighting steep heather and more time enjoying the view. The skill is not complicated, but it does reward practice.

Most UK fell and moorland maps use a contour interval of 5 or 10 metres. That means each line represents a fixed height above sea level. Closely spaced lines show steep ground; widely spaced lines show gentle slopes. On open moorland, that distinction matters. A gentle slope of grass and bilberry is easy walking. A tight cluster of contours often means broken crags, loose scree, or a gully that will slow you down and sap your energy.

Reading the Shape of the Land

Contours are not just about steepness. Their shape reveals the landforms you will meet. A series of concentric rings, getting smaller, marks a summit or a knoll. A U-shaped or V-shaped contour that points uphill indicates a reentrant or valley. The opposite shape, a spur or ridge, points downhill and usually offers drier, firmer walking. A saddle or col between two summits appears as two sets of rings with a lower, hourglass-like gap between them. Recognising these shapes turns a flat-looking map into a three-dimensional picture.

Look also at the spacing around a summit. If the contours are tightly packed on one side and widely spaced on the other, you have a steep drop on one flank and a gentle approach on the other. That is your cue to plan a route that climbs the gentle side and avoids the steep ground, especially in poor visibility or when the rock is wet. On moorland, steep ground often means loose peat, eroding gullies, or hidden holes, so a contour-aware route is a safer route.

Contours, Effort and Wildlife

Counting contours gives you a realistic idea of effort. If you cross five 10-metre contours on a climb, that is 50 metres of ascent. Do that several times and you will feel it. This is especially useful on moorland where the ground is often tussocky and slow. A route that looks short on the map can feel twice as long if it repeatedly crosses reentrants and spurs. Planning a line that follows a contour around a hillside, rather than climbing and dropping, saves energy and keeps you drier.

Contours also hint at wildlife. Wet flushes and boggy hollows often sit in reentrants where water gathers. These areas attract snipe, curlew, and golden plover. Drier spurs and ridges are more likely to hold red grouse, meadow pipits, and the occasional merlin. On a summer evening, a gentle, south-facing slope with scattered contours may be alive with adders basking or ring ouzels feeding. Reading the land’s shape helps you move quietly and predict where you might see these species without disturbing them.

Planning a Moorland Route with Contours

Start by identifying your intended line of travel on the map. Look for contour features you can use as handrails: a spur that runs towards your destination, a reentrant that leads you down to a stream, or a broad ridge that keeps you on high, dry ground. Aim to cross contours at right angles where possible, especially on steep ground, rather than traversing diagonally across a slope. That reduces the risk of slipping and makes your pacing more consistent.

  • Use contour interval to estimate climb. Count the lines you cross between two points. Multiply by the interval to get total ascent.
  • Identify steep ground early. Tight contours mean slow, careful movement. Plan a detour if the slope is more than you want to tackle.
  • Look for safe lines of travel. Spurs and ridges are usually drier and offer better footing than reentrants and gullies.
  • Check your escape routes. Contours show you where you can drop off a ridge if the weather turns or someone in your group tires.

Once you are out on the moor, use contours with your compass and pacing. If you are walking on a bearing, note the contour features you expect to cross: a reentrant, then a spur, then a flatter section. When you meet them, you know you are on track. If the ground does not match, stop and reorient. That simple habit prevents the classic moorland error of walking too far in the wrong direction.

Practising Before You Set Out

You can build contour confidence at home. Take a local map and trace a route with your finger. Ask yourself where the steep ground is, where the wet flushes might lie, and where you would choose to walk. Then compare with a satellite image or a previous walk. On the hill, practise counting contours as you climb. Notice how your pace changes when the lines tighten. Over time, you will start to feel the map beneath your feet.

Moorland navigation is not about memorising every feature. It is about understanding the shape of the land well enough to make good decisions. Contours are the key. They reveal the steep ground, the safe lines, and the likely wildlife hotspots. Learn to read them before you leave the house, and every moorland walk becomes easier, safer, and richer.