Fig. 5: Agave Linea is an example of a mature Class 3 structure. Interbraided pairs of ridges may represent activated side cracks that, in addition to the original central crack, have been worked by diurnal tides. Several examples of apparently older, subdued Class 3 structures are crossed by Agave Linea and can be seen in this mosaic of E6 images adjacent to the Conamara Chaos region. The prominent Class 1 ridge pair seen at the right, running perpendicular to Agave Linea, is the same feature that appears prominently in Fig. 3.