Cave pieces made form brushwork. These can be put together like a model train set, they just need sewed up at the seams.   SUGGESTIONS FOR EFFICIENT USE There are several things to cover here, but first and foremost, THANK YOU FOR READING THESE TIPS. They will save you from having HORRIBLE problems later on.   (This is written for GTKRadiant 1.4)   First things first: The caves are each part of their own func_group. So by <CTRL + ALT + clicking> on one brush, you will select that entire se