How to read topographic maps<br>Use the thicker contour lines to determine the elevation. Contour lines represent paths or segments of the earth. Topographic maps are covered in contour lines.
The lines are 2 micrometers wide
( z1 wide :ARG1 ( z2 line ) :ARG2 ( z3 distance-quantity :quant 2 :unit ( z4 micrometer ) ) )