Since that new rule thingee came out where the map is built with these objects in or something, here are the maps stacked. Got these from foman123s file share.
Crypt Stacked:
http://www.bungie.net/Online/Halo3UserContentDetails.aspx?h3fileid=67228662
Sandbox Stacked:
http://www.bungie.net/Online/Halo3UserContentDetails.aspx?h3fileid=66977698
Sky Bubble Stacked:
http://www.bungie.net/Online/Halo3UserContentDetails.aspx?h3fileid=67014500