A subterranean irrigation system (100) has a plurality of fluid conduit (130) for applying a liquid from a source to an area of ground, to which said liquid is to applied while avoiding interference with the above-ground use of such area, wherein the fluid conduits (130) are connected (140； 500) relative to one another and wherein the plurality of fluid conduits (130) comprise a plurality of outlets to effect the distribution of the liquid to the ground area. When the fluid conduits (130) are positioned on the longitudinal edge of a plate-shaped conduit support structure (114) a resistant structure can be provided as natural foundation.
