Artificial Patterns was the first in a three part video work installed alongside Casting Territory: A Contemporary River Keepers’ Index of Lesser Known Patterns. Casting Territory: A Contemporary River Keepers’ Index of Lesser Known Patterns, was a collaborative art project by visual artist Martina O’Brien and The Dodder Anglers Club, Dublin, which utilized the art of fly-tying to explore the angler’s inherent knowledge of flora and fauna, physical geography and role as guardians of the River Dodder. Enabled by a process of exploration into the fundamentals of imitation in conjunction with specific accumulated knowledge, the angler’s’ insight into the river is visually conveyed within these alternative flies. Casting Territory: A Contemporary River Keepers’ Index of Lesser Known Patterns was made possible by an Arts Council of Ireland Artist in the Community Scheme Project Realization Award. Artificial Patterns finds the group discussing the colonial beginnings of fly-tying, the origins of commercial lures and entomology specific to the river Dodder.