I decided to get myself some more scenery at the weekend, as I've been after a few blast craters for a while and haven't found any cheap enough, I settled on GW's Quake Cannon Craters. You get 8 half's of craters that join together to make 4 blast craters. They are quite nicely detailed, with bits of ruined buildings and tanks, as well as the odd skeleton, as it wouldn't be GW if it didn't have skulls somewhere.
The two half's.
And just so you can get a feel for the size, I included a heavy weapons team.