You can display the elevation of every survey station. To turn on this option, select the "Display->Label/Mark->Display Elevations" from the main menu bar. You can also select this option by clicking-on the "Label Elevations" button on the tool bar.
Entrance Relative Elevations. If the cave entrance is tied geographic coordinates in the Project Manager and the elevation is set relative to sea level, the station elevations will be relative to sea level. You can also override the sea level elevation and have the Viewer display the elevations relative to the entrance. This is useful for finding the depth of the cave or looking at the depth of specific stations. You can enable this option in the Settings Dialog.
Options. Station elevations will be displayed in Feet or Meters depending on Display Units you have selected. You can also control the color and font of the labels.