If you have not come across the excellent elevation tool from ESRI before, I suggest you check it out. It might be particularly helpful with field trip preparation and write ups.
This tool provides a great Geography mapping tool that lets you see the elevation of the land between two chosen points. It works so simply – by choosing two points on a map with your cursor, and then watching the software build you the cross section profile.
Here is a quick cross section elevation along a stretch of the Exmoor coast: