I'd like to be able to export the plan of my cavity in KML format in the same way as with VisualTopo (‘Polygons’ option). I use this KML file to display the map on the topographical map. Currently, I export from CaveRenderPro in ‘PocketTopo’ format and use VisualTopo to create the KML.

If you select LRDUs + Volume before exporting to kml, then you should get something similar, the difference with VT being the polygones are not filled.

Thank you Droniste for your answer. I can't find where I can select LRDU before exporting. Can you help?

LRDUs = GDHB in French

then Vizualization > Google Earth > save to *.kml

Thank you. Now it is Ok. I have just error messages when I import the KML file into map.geo.admin.ch.

I also had an error message when I tried to import CRP generated *.kml files into QGIS and this was caused by slight format issue. *.kml files output by CRP don't follow exactly the structure/format of a *.kml file generated by Google Earth. However, the generated *.kml files are readable by Google Earth, so a way around to correct any format issues is to open the file in Google Earth and save/overwrite the file from there. Then the format glitches should be corrected and you should have no issues importing your files in third part software/apps.

Jochen might be able to fix this issue.

If I switch off the omega symbol, I get an error with the next external link in the KML file:
Myabe caused by "http" ? Could be solved if the links where with "https" ?
CORS mean "Cross-Origin Resource Sharing"

I have tried with htttps in the kml file and I have the same error message.

It is not possible to import the test file into map.geo.admin.ch because the coordinates are outside Switzerland.

If I delete lines 5 to 136, I no longer get an error message!
It's easier for me to write in English. And even easier in French ;-)