Hi I've just assembled a set of surveys that include a number of small caves that are interconnected by surface survey legs. The surface surveys continue out of one cave and to the entrance of the next. I have ensured that each survey only includes centrelines from one cave, but often they contain surface surveys as well. A survey-list looks like this. Title Length Depth Explored Approx. Duplicate Surface Shots Stations Kids <javascript:xTree('Kids')> Cave 49 14 0 0 0 22 140 141 ad-Kids Tunnel 49 14 0 0 0 22 140 141 A cave-list looks like this. Title Length Depth Explored Altitude Kids Cave 49 14 59.6 Now the cave is 27m long and the depth is 3m, but the cave-list does not reflect this. The survey-list includes the length and depth of the whole survey regardless of whether it is underground or not. That seems reasonable to me. The cave-list appears to do the same. Should it not present the length and elevation range of only the underground shots? Regards Bruce