TerraPrinterLaunched in March 2025
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How the skyline is found

Thousands of sightlines

From your eyes, a line goes out every fifth of a degree all the way round, up to 250 km, over real elevation data: fine detail close by, coarser far away. The highest point each line meets is the skyline.

The Earth curves away

Far mountains sink behind the curve of the Earth, and the air bends light a little over them. Both are included, so a peak 150 km away sits as low as it does in a photo.

Only peaks you can see

Every named summit nearby is checked along its own sightline. If a nearer ridge hides it, it is left off; the ones you can see get their name, height and distance cut into the band below.

Ideas to try

The summit you climbed together, the view from a wedding venue or a holiday balcony, a mountain hut, the hill above your home town, or the view from the top of a tower.

Elevation: Mapzen Terrain Tiles on AWS (SRTM, GMTED2010, ETOPO1 and others). Peak names and heights: © OpenStreetMap contributors (ODbL). Map © OpenStreetMap contributors, © CARTO. Want a ring with a ridgeline instead? See mountain jewellery and vases and lamps, open the TerraPrinter app or see more 3D map gift ideas.