What version of AC are you using? Having your AC version, operating system and basic hardware in your signature helps you get better answers on this forum.
In the meanwhile, have a look at this
thread. Essentially, from AC 12 onwards, the GE connection addon brings in the terrain and snapshot as an object instead of a mesh. You may, therefore want to first create the snapshot in 11, save it as a module and then import that into your project.