Topographic Map of Seychelles

The Seychelles are the world's only mid-ocean granite islands, and Mahé — the main island, home to Victoria — is a steep ridge of ancient rock rising to 905 m straight out of the Indian Ocean. Beaches sit at the foot of near-mountainous terrain.

The terrain of Seychelles

Morne Seychellois runs the length of the island as a forested spine, with short, very steep catchments dropping to the coast on both sides. There is almost no coastal plain: the contours start packing together within a few hundred metres of the shoreline. The map reads as a narrow, high-relief backbone framed entirely by ocean.

How this map was made

Every contour line traces a constant elevation drawn from public SRTM 30 m radar data, extracted with a marching-squares algorithm at a 50 m interval and coloured by height — cool blues in the valley climbing to warm reds on the summits. The satellite base layer and the contours share the same Web Mercator projection, so the lines fall exactly on the ground they describe.

You can regenerate this exact view — and change the interval, colours, resolution or export it as a print-ready SVG — directly in the TopoLines editor.