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The ROC 2000 System consists in two different kind of elements:
FLAT and 3D.
FLAT has complanar edges, and generate regularly shaped
walls protruding not more than 20 cm.
3D has curved edges on three planes, so that elaborate
walls can be built, with overhangs, bulges, columns, on which
the climbing becomes much more technical and similar to the
climbing on real rock.
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