This particular project actually came about in two phases. The client came to us wanting to qualify for the City of Portland's Audubon Society "Backyard Habitate Certification". Our first infrastructure of paths was crushed gravel with steel edging. Permeability was a requirement for certification... but after a year of being in the ground, the owners wanted another level of finish... and opted to add Iron Mountain Flagstone Steppers with a 1" gap, which still met the parameters of certification. Photography by: Joe Hollowell