Contours don't flatter anything

Contour lines packed tight up one side of a ridge, a dashed path threading between them, a spot height marked △ 3,842, and painted across it two rectangular blazes in white and red.

There's no sunset, no silhouette, no inspirational word. There's a hill, drawn accurately.

Why is a contour map better than a landscape?

Because contours describe effort and a landscape describes a view.

A photograph of a mountain tells you it was beautiful. Contour lines packed together tell you the ground went up thirty metres in eighty, which is what your legs remember. Widely spaced lines mean a stretch where you could talk.

Anyone who reads maps sees the walk. Everybody else sees a pattern, which is the double reading this whole batch is built on — legible outside as a graphic, precise inside.

What are the blazes?

A promise from somebody who walked it first.

Painted rectangles on rocks and trees are one of the oldest pieces of open-source infrastructure in the world: a volunteer, decades ago, put paint on stone so that a stranger wouldn't get lost. The colour combinations are systems — different countries and trail networks use different pairings for different classes of route.

Printing one is printing a small piece of that arrangement, and it's why the mark is more moving than it has any right to be.

Which section of map should it be?

The bit that hurt, at real scale.

Not the whole trail — a section. The col, the final ridge, the switchbacks, the plateau that took an hour longer than it looked. A cropped section with a spot height and a grid reference is specific to a day; a whole route reduced to fit is a diagram.

The spot height is the anchor. A real number does what a place name can't, because it can be checked and because it means something to the legs that got there.

Can I use a real map?

The survey data behind maps is generally public, and contour information is a fact about terrain.

The published map sheets themselves are another matter — national mapping agencies hold rights in their cartography, styling and symbol sets, and some license aggressively. So a drawing based on the shape of the ground is fine; a reproduction of a specific agency's sheet, with its colours and typography, is not.

Draw the contours, invent the styling, keep the grid numbers generic.

Does it work for a specific walk?

That's the version worth making.

A first long-distance route, a summit somebody trained for, the hill behind a house walked four hundred times. The design doesn't change; the coordinates do, and that's the entire difference between a hiking shirt and their hiking shirt.

For a group who did it together, the same section on several garment colours is a set rather than a uniform.

Does it print well?

Yes, with the usual caution about line spacing.

Contours at true map density fill in on fabric — the closer the lines, the steeper the ground, and steep ground is exactly where they merge. The working version exaggerates the spacing slightly, which keeps them readable and doesn't lie about the shape.

The blazes are the opposite problem and the solution to it: two solid painted rectangles give the design hard, high-contrast anchors that a fine line composition badly needs.

What garment colour?

Olive, sand or slate — map colours, and also the colours of the kit.

Cream contour lines on olive reads as a printed sheet in low light, which is how most people actually look at a map. The blaze colours then supply the only saturation in the design, which is correct: they're the only saturated thing on the hill too.

How do I get one made?

Describe the section at JustOG — which hill, which side, the spot height, and the blaze colours. Pick a direction, drag the crop frame, see it composited on the real garment, and it's made to order and shipped.

Designs other people have published are in the shop.

Somebody painted those two marks on a rock so that you'd know you were still on it.