Le Tréport Mers - Criel sur Mer Live Cam

Geological and Coastal Landscape

The dramatic chalk cliffs that define the seaside towns of Le Tréport and Mers‑les‑Bains form one of the most striking geological features along the Normandy and Hauts‑de‑France coastlines. These white escarpments, part of the same Cretaceous chalk ridge that stretches from the White Cliffs of Dover, plunge vertically into the English Channel, reaching heights of up to 110 meters. The alternating layers of pure chalk and marly strata reveal millions of years of sedimentation, while erosion has sculpted deep fissures and sea caves at the cliff base. At low tide, the pebble beaches extend far out, exposing tidal pools rich with echinoderms, mollusks, and microscopic foraminifera—delighting amateur geologists and fossil hunting enthusiasts.