Image Number 7 for United States Patent #7677991.
A golf system that includes a tee or other area for striking a golf ball; and a golf green having a concave surface with a ball receptacle located at the lowest point in the surface so that a ball landing and remaining on the green will roll into the ball receptacle. The green includes a resiliently compressible layer coinciding with the concave surface. The resiliently compressible surface may include at least one layer of corrugated plastic material and may be covered with an artificial turf surface. The golf system may be used to play a unique game, wherein a plurality of balls are rolled on the green and travel in a spiral manner into the ball receptacle. The golf green may be mounted on a portable frame.