The Harhoog is a dolmen, a rectangular megalithic tomb from the Funnelbeaker culture, located near Keitum on the island of Sylt in Schleswig-Holstein, Germany.

The megalithic Harhoog burial chambers were originally located near the mud-flats between Keitum and Tinnum.

The stones were moved to the area near the Tipkenhoog on the coast near Keitum in 1954,[2] when Sylt Airport was under development.

The graves at Harhoog are dated to the Neolithic and belonged to ancient settlements of the island's Funnelbeaker culture, probably around 3000 BC.

[4] The megalithic tombs are built with large, rough stone slabs (one or more) which are arranged in different patterns.