Abstract: A wall block includes an upper surface, a lower surface, and a body having a front portion, a rear portion, and an intermediate portion interconnecting the front and rear portions. The intermediate portion defines a minimum spacing between opposing outer side surfaces of the intermediate portion. The rear portion includes first and second tail sections disposed on opposite sides of a centerline of the block, each tail section having forward-facing and rearward-facing surfaces. First and second protrusions are formed on the upper surface on opposite sides of the centerline and are positioned closer to the rearward-facing surfaces of the tail sections than to a front surface of the block. Each protrusion is laterally spaced from a respective outer side of the block by a defined distance. The minimum spacing of the intermediate portion is less than twice the lateral spacing of each protrusion from the respective outer side.

Abstract: A wall block includes an upper surface, a lower surface, and a body having a front portion, a rear portion, and an intermediate portion interconnecting the front and rear portions. The intermediate portion defines a minimum spacing between opposing outer side surfaces of the intermediate portion. The rear portion includes first and second tail sections disposed on opposite sides of a centerline of the block, each tail section having forward-facing and rearward-facing surfaces. First and second protrusions are formed on the upper surface on opposite sides of the centerline and are positioned closer to the rearward-facing surfaces of the tail sections than to a front surface of the block. Each protrusion is laterally spaced from a respective outer side of the block by a defined distance. The minimum spacing of the intermediate portion is less than twice the lateral spacing of each protrusion from the respective outer side.