Richtstätte bei Ohrensen, Execution site in Ohrensen, Lower Saxony, Germany

Richtstätte bei Ohrensen is an execution site near Ohrensen in northern Germany. The raised ground stands away from both villages and is now surrounded by fields and low vegetation.

The execution mound on Bostels-Berg was heaped up specifically for Anna Marlena Princk, who was beheaded with a sword on 31 October 1842 before about 3,000 onlookers. She had been held for three years in the cellar vault of the Harsefeld manor and retracted her confession before the executioner. The mound was leveled a few years later for farmland, and the site was rediscovered in 2006 from 19th-century survey documents.

Locals called the mound Marlenenbarch, Low German for "Marlene's hill", after Anna Marlena Princk, known as the "Rote Lena" for her red hair. About 3,000 people are said to have watched the beheading on 31 October 1842, among them singing schoolchildren and dragoons. The case was later shown in ZDF-History documentaries in 2020 and 2021.

The hill stands in open terrain between two villages and is best reached on foot or by bicycle. Excavations in 2020 uncovered remains that are now buried again beneath the ground.

The 2020 excavation found the coffin covered by a double layer of stones, and a half-metre boulder had been placed on its lid at the foot end. Researchers link this to the widespread fear of revenants, since those buried outside consecrated ground were thought unable to find peace. The severed skull lay at the foot end of the coffin.