A formliner for use in creating a decorative pattern on an exposed face of a curable material, the formliner comprising: a sheet of material; at least one cell formed in the sheet of material; and at least one rib extending along the cell and forming a boundary of the cell, the rib being formed in the sheet of material and defining a raised profile, characterized in that the rib comprises: a first section defining an exterior surface and an interior surface, the exterior surface of the first section of the rib being configured to face outwardly toward the curable material, and to define a cross-sectional exterior profile, the first section further defining a recess adjacent to the interior surface thereof, the recess defining a cross-sectional interior profile; a second section defining an exterior surface that defines a cross-sectional exterior profile, the cross-sectional exterior profile of the second section being less than the cross-sectional interior profile of the first section; at least one opening formed in the first section; and a transition zone formed in the rib between the first section in the second section to interconnect the first section with the second section, the transition zone defining a variable cross-sectional exterior profile increasing from the cross-sectional exterior profile of the second section to the cross-sectional exterior profile of the first section; wherein a plurality of formliners can be interconnected by overlaying at least a portion of first sections onto at least a portion of second sections such that portions of the second sections are nested within recesses of the first sections, and wherein exterior surfaces of the first sections of the ribs of the plurality of formliners are flush with each other upon the nesting of the portions of the second sections within the recesses of the first sections, and wherein the opening in the first section of a first formliner mates against a transition zone of a second formliner such that visible seams in the decorative pattern are minimized when the plurality of formliners are interconnected in use. a sheet of material; at least one cell formed in the sheet of material; and at least one rib extending along the cell and forming a boundary of the cell, the rib being formed in the sheet of material and defining a raised profile, characterized in that the rib comprises: a first section defining an exterior surface and an interior surface, the exterior surface of the first section of the rib being configured to face outwardly toward the curable material, and to define a cross-sectional exterior profile, the first section further defining a recess adjacent to the interior surface thereof, the recess defining a cross-sectional interior profile; a second section defining an exterior surface that defines a cross-sectional exterior profile, the cross-sectional exterior profile of the second section being less than the cross-sectional interior profile of the first section; at least one opening formed in the first section; and a transition zone formed in the rib between the first section in the second section to interconnect the first section with the second section, the transition zone defining a variable cross-sectional exterior profile increasing from the cross-sectional exterior profile of the second section to the cross-sectional exterior profile of the first section; a first section defining an exterior surface and an interior surface, the exterior surface of the first section of the rib being configured to face outwardly toward the curable material, and to define a cross-sectional exterior profile, the first section further defining a recess adjacent to the interior surface thereof, the recess defining a cross-sectional interior profile; a second section defining an exterior surface that defines a cross-sectional exterior profile, the cross-sectional exterior profile of the second section being less than the cross-sectional interior profile of the first section; at least one opening formed in the first section; and a transition zone formed in the rib between the first section in the second section to interconnect the first section with the second section, the transition zone defining a variable cross-sectional exterior profile increasing from the cross-sectional exterior profile of the second section to the cross-sectional exterior profile of the first section;