Topographic 3D Map - Danube Bend (Dunakanyar)

This is the 3d relif map of the Danube Bend and the Pilis Mountains and the Visegrád Mountains.
Its created from website: http://jthatch.com/Terrain2STL/

i'd like to make the mountains more visible, i printed it with visible contour lines:
I printed it with 0.05 layer height, and from every 10 layer 2 with different color (black), in this case every mm contains 2 contour line.