DLE craters exhibit radial striations that extend from the crater rim to the outer edge of the inner ejecta deposit. These striations have been suggested to result from radial scouring of wind vortices by the advancing ejecta curtain [Schultz and Gault, 1979; Mouginis-Mark, 1981, 1987; Schultz, 1992], or a base surge [Boyce and Mouginis-Mark, 2006]. Radial striations, however, are also common in terrestrial and Martian landslide material (Figure 1c) [Shreve, 1966; Lucchitta, 1978]. Orthogonal troughs, similar to those commonly found in terrestrial landslides [Shreve, 1966], crosscut the radial grooves in the inner ejecta facies of many DLE craters (Figure 1d). In landslides, lateral stresses from adjacent “drivetrains” cause pervasive splitting as the landslide spreads out, forming the grooves [Shreve, 1966; De Blasio, 2011b]. Lucchitta  and De Blasio [2011b] suggested that the presence of grooves is enhanced by low coefficients of friction. Further, lack of confinement of a landslide seems to correlate with the presence of longitudinal grooves [Lucchitta, 1978; 1979]. Thus, the radial nature (lack of confinement) and icy substrate of a DLE crater inner layer landslide is consistent with the presence of longitudinal grooves on the landslide surface. The larger scale of the Martian grooves (~100 m across; Figure 1c) is consistent with the larger sizes of the landforms themselves (Sherman landslide runout ~5 km [Shreve, 1966], Martian landslide runout ~7–20 km). The large Martian landslides in Valles Marinaris, Capris Chasma, and Ganges Chasma [Lucchitta, 1979; De Blasio, 2011a], which have anomalously large runout distances compared with terrestrial landslides, also display grooves of identical dimensions to those found on the inner layer of DLE craters. We note that lower friction at the base of an ice-rock landslide enhances slippage/splitting of landslide material [De Blasio, 2011b]. In our scenario, we interpret the radial striations to be due to landsliding of the outer rim material, enhanced by crater rim structural uplift and an underlying snow and ice layer. The larger dimensions of the landslide, radial nature of the landslide surface (crater rim), and the lubricating basal ice/snow layer enhance splitting to generate wider grooves than their terrestrial counterparts.