Aaah, all the quations have already been awnsered, that's what I call service.
The scenery is indeed from Armorcast. I bought the crates ages ago at the the time that the company looked like it would stop producing scenery. Off course since that was still im my youth, I didn't know that miniatures and resin scenery (except GW) often make a comback in someone else his hands.
I like the Critters as well keeper, a nice job, especially considering you had to cast them as well.