I work in a surface mine and I map the vertical to near vertical high walls in the mine as we mine off our benches. Currently we are using ArcMap with a mine topo in plan view using point data. I would like to be able to map the vertical walls as I see them using a toe and crest topo then switch to plan view with out losing the data. this would allow you to view the pit in true 3D. I don't know if I am adequately explaining this. Using point data does not always accurately represent what a fault or formation contact is doing vertically. If we could draw in those contacts in the vertical view we would capture the whole story.