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.
Contour lines are thicker because they are the most important.
( z1 thick :ARG1 ( z2 line :mod ( z3 contour ) ) :ARG1-of ( z4 cause :ARG0 ( z5 have-degree :ARG1 z2 :ARG2 ( z6 important :ARG1 z2 ) :ARG3 ( z7 most ) ) ) )