[4] Sinlap's crater floor is relatively flat, with a ~2 kilometer wide bright spot located slightly west of center.

There is no evidence of a prominent central peak or concentric rings, as would be the case for a pristine central-peak crater and multi-ring impact basin respectively.

Partial burial of shallower sections of the blanket by sand dunes may account for the discrepancy, as SAR imagery can penetrate further underground and reveal more of the structure.

The ejecta blanket contains an inner, slightly darker annular ring that extends roughly 60 kilometers from the crater rim.

Following the impact, erosion would subsequently flatten out or bury the central peak, as rainfall redistributes material around the ejecta blanket.