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An interlocking segmental retaining wall. The wall includes a plurality of blocks stacked upon each other. Each block includes a void filled with aggregate. In addition, each block includes an extension and slot for interlocking the blocks together to form the retaining wall. Each block also include

An interlocking segmental retaining wall. The wall includes a plurality of blocks stacked upon each other. Each block includes a void filled with aggregate. In addition, each block includes an extension and slot for interlocking the blocks together to form the retaining wall. Each block also includes a plurality of lugs and an indentation for aligning and stacking the blocks on each other. The blocks may also be stacked to form a curved retaining wall. In an alternate embodiment, the blocks may have tabs located on an upper portion of each block. Each block is laterally positioned by centering the block upon the top of two lower block.

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1. A retaining wall having at least a first row and a second upper row resting on top of the first row, each of said rows comprising one or more blocks, one or more of said blocks comprising: a block body having: a front wall, a back wall, a first side wall, and a second side wall forming a voi

1. A retaining wall having at least a first row and a second upper row resting on top of the first row, each of said rows comprising one or more blocks, one or more of said blocks comprising: a block body having: a front wall, a back wall, a first side wall, and a second side wall forming a void within an interior area of the block, said walls having an upper surface and a lower surface; a plurality of lugs located on the lower surface of the block adjacent to the void; a lug indentation located on the upper surface of the block adjacent to the void, said lug indentation sized to accommodate at least one lug from an upper block of the second row; an extension located on a bottom portion of the back wall of the block; and a slot located on an upper portion of the back wall of the block, the slot providing a support for the extension of an upper block from the upper row of the retaining wall to rest; whereby a lug from the upper block is inserted into the lug indentation of the lower block, the extension of the upper block resting on the slot of the lower block. 2. The block of claim 1, wherein one of said plurality of lugs is located substantially at the center of the front wall near the void. 3. The block of claim 1, wherein one of said plurality of lugs is located substantially at a corner of the void. 4. The block of claim 1, wherein the extension and the slot are located rearward of the void. 5. The block of claim 1, wherein a width of the slot is narrower than a width of the extension. 6. The block of claim 1, wherein the extension is divided into a plurality of tabs. 7. The block of claim 1, wherein the plurality of lugs and the extension are operable to receive and hold in place a geogrid.