Maybe someone can give me some advice on this question: I want to depict a section view of an entrance pit, but about 12' down the pit is offset about 5,' and I wanted to do a 90 degree turn in my section line, and then another 90 degree turn, and then across a large room. In cases such as this would it be OK to show the section line where it passes through the cave? I know with a standard straight-line section, the line would not normally be shown. However, in this case, there would be no other way for the map reader to interpret where the section lines turn.
It is done that way in mechanical drawings all the time, which is what I am more familiar with. However, conventions in cave cartography are somewhat different.
Looking forward to your suggestions.
Trogman