Those are dips, not mounds. The illusion comes from violating the “shadows stab stomachs” …
Those are dips, not mounds. The illusion comes from violating the “shadows stab stomachs” rule for viewing aerial photographs. Turn the image so the palm shadows are toward you. Dips, not mounds. Skateboardable. https://twitter.com/doverview/status/1621997331057893378