Easy answer for turning a weed fest into garden short of pulling, what can I do?

[Jeff S]

I want to avoid pulling every weed in this huge (20X20) rock laden area just to start with a clean pallet. I was thinking of putting 1 foot of soil down (to choke the weeds?) with a heavy 6" bark layer afterwards? Or will the weeds come through? I'm going to do the 1' of soil anyway.

 

[Jennie]

round up first and let the weeds die. Then put plastic down and cover with soil.