walked, at , grade, left
25 % or steeper
.
Not a navigation tool.
The mountain is lit by the real sun for the date and the time shown: the sun's position is computed for this place, and the shadows the ridges cast are swept over the height grid for that instant, not guessed from the slope. A fixed mapmaker's lamp from the northwest adds relief that reads at any hour, and the 100 m contours are drawn from the true height.
The plate keeps one daylight look in both of the phone's themes: a dark version would turn the lit faces dark and drown the shadows, so only the chrome around it follows the theme. That is a display choice, not data.
The time track under the picture is a sunshine recorder's card for the point under the marker: the sun's arc for the day, 0.4 px for each degree it stands above the horizon, burned in wherever the terrain leaves that point in direct sun. Where the arc is drawn only as a line, the sun is up but a ridge hides it. It is direct sun as this terrain allows it: no cloud, haze, trees, buildings or snow; the sun treated as a point, so the first sun is when its center clears the ridge; the terrain at 16 m in the detailed box and 64 m beyond it. It is not a forecast of sunshine hours.
The scale bar is true at one distance, the ground in the middle of the view, and says which. Lakes are drawn at the level the lidar reads.
Every file was built once from the sources above by the pipeline in the app's tools/ folder (tools/build_all.sh) and travels inside the app. Nothing is fetched, and the app has no position fix and reads no sensor.
Solar position uses the NOAA Solar Calculator algorithm (Meeus, Astronomical Algorithms), written out in this app: about a minute on sunrise and sunset inside 72° of latitude. Times are Norwegian, CET and CEST in summer, from the European rule, not from this phone's clock. Bearings are true; magnetic declination is not modeled.
One finger turns the view, two fingers move it, a pinch zooms, and the keys at the right zoom and fit the route. Tap the ground to put the marker there. A double-tap, the F key or the corner key hides the controls; the corner key, Escape or a double-tap brings them back. While a tool waits for points the double-tap stands down.