Icelandic volcanic ash from the Late-glacial open-air archaeological site of Ahrenshöft LA 58 D, North Germany

► Analyse tephrostratigraphy of a Late-glacial open-air archaeological site in north Germany. ► Site taphonomy revealed as crucial factor in cryptotephra preservation. ► Geochemistry indicates one Icelandic rhyolitic eruption from Katla. ► Three potential correlates identified - Vedde Ash or AF555 tephra or Suduroy tephra.