No more need to read contour lines, 3D printing can directly turn the 2D map into a 3D model. It can present any landform as long as you build the 3D model.
Solution
Step 1: Examine the 3D models carefully, especially whether the details exceed minimum layer heights.
Step 2: Add supporting structures for the models in case they may break or deform. As they are all monochromatic, no splitting work is needed.
Step 3: Arrange the placement and 3D print the models in one piece with SLA Generic Resin.
Step 4: Cut off the supports and wash the prints with IPA. Spray the prints with a prime after air drying. Polish to remove the marks.