Abstract: A method of forming a concrete block embedded with coquina stone comprising the steps of positioning a layer of sand on the bottom surface of a concrete block form, then positioning a layer of coquina stone above the layer of sand positioned on the bottom surface, then pouring concrete over the layer of sand and the layer of coquina stone, thereafter allowing the concrete to harden to form a concrete block which is then removed from the concrete block form.

Abstract: A novel concrete block having six generally planar faces to provide a retaining wall for retaining a bank of earth. The retaining wall includes a lower tier of a plurality of separate abutting bottom blocks; an intermediate tier of a plurality of separate abutting intermediate blocks; and at least one upper tier of a plurality of separate abutting blocks. Each concrete block of each tier has six generally-planar faces, consisting of two planar end faces, a front planar face and a rear planar face, the front planar face and the rear planar face having a plurality of drainage ducts extending therebetween, an upper planar face and a lower planar face. Each upper planar face differs from the lower planar face of each block by a particular recited structure. As well, particularly defined locking interrelationships are provided between the individual blocks of the tiers of blocks.