ecology block
（ plural ）
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A large concrete block with a groove in the bottom face and a tongue on the top face to eliminate slippage when they are stacked. There is also a steel loop on the top face to facilitate lifting. The blocks are stacked in an offset manner to create a wall for retaining earth by means of their great mass. A wall built with them can be readily dismantled and the blocks reused (in ecological fashion).
ecology block
The crew built a temporary retaining wall from ecology block, hooking cranes to their steel loops and stacking them offset so the massive, interlocked structure would hold back the slope yet be dismantled and reused.
The crew built a temporary retaining wall from ecology block, hooking cranes to their steel loops and stacking them offset so the massive, interlocked structure would hold back the slope yet be dismantled and reused.
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