Stevns Klint

Stevns Klint is a chalk sea cliff on the Danish island of Zealand, at Højerup. It stretches for about 17 kilometres (VisitDenmark says around 20) and reaches roughly 40 metres in height. In 2014 it was added to the UNESCO World Heritage List because a dark clay layer, the Fiskeler ("fish clay"), marks the boundary between the Cretaceous and the Paleogene. It is usually 5 to 10 centimetres thick and rich in iridium, which supports the Alvarez hypothesis of an asteroid impact. The geologist Johan Georg Forchhammer named it in 1825.

Højerup Old Church dates from around 1200; in 1928 a landslide sent its chancel onto the shore below. Beside the church about 110 steps lead down to the coast, where the fish clay can be seen particularly well. You may keep fossils found on the beach, but must not chisel the cliff itself.

Stevnsfort, a Cold War fortress (built 1953, in service until 2000), has been a museum since 2008; its tunnels are 1.6 kilometres long. The steps are steep and the coast is eroding: heed barriers and signs on site.