Camas, Washington. Limited breeding program is focused on health and temperament first, followed by promoting the Old English type. Founded in 1999, Marcy Mountain Mastiffs is focused on the fun and enjoyment which comes from owning, working, and playing with our beloved Mastiffs. Our mastiffs are members of our family. We show them in conformation and obedience, perform therapy visitations with them, and enjoy them 100% of the time!