[Therion] Creating GeoTIFF files

A question has come up from one of my caver friends who is very new to cave survey but an old hand at ArcGIS and various other ESRI tools. He earns a living as a GIS expert. He would like to get a georeferenced TIFF (GeoTIFF) which includes GPS coordinates of survey stations. I looked at the KML file produced by Therion and find no references to survey stations. A KML file is really just a long (very long!) list of GPS coordinates, so it probably could include survey stations. So my question for the group: Is there a way to produce a GeoTIFF file which includes survey stations? Related question: Do the ESRI outputs from Therion include survey stations? Thanks! -- =============== Bill Gee