Figure 3. Initial map and part of the coordinate data produced by Cavemap.m for the Duden Spring cave system developed in the Antalya Travertine aquifer of southern Turkey. The long line marks the cave survey while the shorter lines mark the cross-sectional transects. Overlapping wall coordinates are enclosed with boxes. The inset emphasizes a transect overlap and demonstrates one choice for adjusting the wall coordinates. An erroneous pinch-out in the 2-D profile of the conduit occurs when the assumed orientation of a width measurement closely parallels the preceeding survey line as demonstrated by the survey station enclosed with a circle.