Étretat is best known for its chalk cliffs, including three natural arches and a pointed formation called L’Aiguille or the Needle, which rises 70 metres (230 ft) above the sea. The Etretat Chalk Complex, as it is known, consists of a complex stratigraphy of Turonian and Coniacian chalks. Some of the cliffs are as high as 90 metres (300 ft).
Two of the three famous arches are visible from the town, the Porte d’Aval, and the Porte d’Amont. The Manneporte is the third and the biggest one, and cannot be seen from the town.