Backgrounds used on "Old West" products

snieto2001_ca505f191e

Hello. I don't know if this goes here or it goes on "nuts 'n bolts" forum. I've bought 2 (for now) products from the "Old West" series: saloon and sheriff office. I'd like to know which background and ground plane has been used for the promos. I guess that with multiplane cyclorama, what it's great for a single promo, but probably not so good if the idea is an animation with several... buildings is the word? I know that a product ("Old West bathhouse") uses as ground plane the one from Native Village, but I don't know about the background/horizon, or what is used on the other products.

Thanks in advance. Sergio.