I couldn't find any glaciers, BUT i found something better c:
When you open your FH object maker, go to "My Rocks" and load up, for example, Mount. Click on it, then go to the "Mesh" tab at the top right and where it says "Material: rockMat1" change the rockMat1 to "snowMat". You can do that with ANY of the objects in your My Rocks folder. This gives them an iceberg/glacier appearance!
When you've done that, simply go back to your 'Object' tab, *RENAME THE GROUP IT'S BEING SAVED TO, and click save. Then you've got some nice bergs for your maps!
*If you try and save another object, even just a rematerialed one, to any of the default object groups, you will break your game.