Abstract: A corner block joined at the side edges thereof and including two mirror image blocks joined at said edge, each of said blocks having a pair of exposed faces, at least one of said faces including a removable portion separated from said block by a scoreline so as to allow an installer to remove said removable portion, wherein said corner block may present a pair of smooth faces when exposed, or alternatively a smooth and a rough split face as exposed, wherein said blocks including key-receiving key ways disposed proximate the top and bottom thereof.

Abstract: A standardized block for forming a retaining wall, said block comprising a top and bottom and having disposed proximate the top thereof first, second and third abutment means, and having disposed proximate the bottom thereof fourth, fifth and sixth abutment means, said second and fifth abutment means abutting in a first abutting position when like blocks are placed course upon course to form a retaining wall having a substantially vertical alignment, said first abutment, said second abutment and said third abutment abutting with said fourth, fifth and sixth abutment in a second abutting position different from said first position when like blocks are placed one upon the other, course upon course, to provide a substantially set-back retaining wall construction, and wherein said first, second and third abutment means abut with said fourth, fifth and sixth abutment means in a third abutting position different from said second or first position when like blocks are placed one upon another, course upon course, to