Have you tried to toggle the map textures? If not, open the map. Click the "three-layer" icon in the top right corner next to the clock. The contour lines then becomes much more visible.

Does this solve the problem?

Yes it solves the problem, but having another color for the textured mode could be pretty useful too

Related to #7181
(textures on map hide contour lines)

Separating colour option for more map components (not only icons) will be nice.

Also, lines on GPS screen have too weak contrast.
You barely see any details other than roads and coastlines
particularly when you are moving fast or it is night time.
A1/A2 GPS was much more visible with its white non-transparent background,
so just returning to previous style will do better, imho.

Voted up. The contour lines should be a different colour when the satmap texture is enabled, so they actually contrast with the background.

Issue persists in 1.65+

Issue persists in 1.70.141764
Duplicate T60451