Concept picture · not a photo of a printAt 28 mm: 234 mm (9.2 in) tall · 203 × 142 mm footprintThis is a centrepiece wall of glacial ice and rock, built as one section of a longer barrier. The main body is a tall, slab-like wall of pale blue ice, its face scored with vertical striations, ridges and rounded seams where the ice has flowed and frozen over time. Near the centre a narrow vertical crevice splits the wall from the ground to the top, forming a pass just wide enough to lead a single file of travellers through. The crevice narrows toward the upper edge, so the two faces seem to lean in and meet above the opening. On the left-hand side, the ice gives way to stacked, weathered blocks of dark grey-brown rock, layered in courses and worn at the edges. Clusters of icicles hang from the ledges above, some long and tapering to fine points, others short and stubby, all dusted with snow. The rock steps outward in terraces, creating a rugged, uneven profile that contrasts with the smooth face of the ice. On the right-hand side a thinner band of rock and ice continues the line of the wall, with a shelf of snow resting on top. The base is a broad, irregular plinth of rock buried in drifted snow, with loose chunks of blue ice scattered across the ground at the foot of the wall, some half-sunk in the snow and others resting on the crevice floor. The wall is complete everywhere except the crevice, and shows age throughout: the edges are softened, the ice is pitted, and the rock is cracked along its bedding planes. On the table this suits a frozen pass, a glacier approach, or a border between two icy regions, providing line-of-sight blocking and a natural choke point. The wall is best printed upright with the base flat on the bed. The icicles and fine ridges on the left will need supports, and the crevice edges are thin enough to benefit from careful orientation.
