A stable artificial putting green which includes a base, an intermediate
layer, an artificial putting surface including a pile fabric supported by
the intermediate layer, and an edging defining its outer limits. The pile
fabric extends over the upper edge and down an outer side of the edging
where it is secured. Fine sand fills the interstices about the pile yarns.
The intermediate layer includes a PYRACELL layer. The PYRACELL layer
includes a synthetic sheet formed with a plurality of raised conically
shaped hollow cells over its upper surface. A plurality of drainage holes
are formed in spaces between the cells and a non-wove porous web is
secured to the lower surface of the sheet. Finally, a coarse sand is laid
over the sheet up to substantially top surfaces of the cells.