Battle of Hamburger Hill the steeply-sloped hill against well entrenched troops. Attacks were repeatedly repelled by the PAVN defenses. Bad weather also hindered operations. Nevertheless, the Airborne troops took the hill through direct assault, causing extensive casualties to the PAVN forces. The battle took place on Dong Ap Bia (Ap Bia Mountain, ) in the rugged, jungle-shrouded mountains of South Vietnam, from the Laotian border. Rising from the floor of the western A Sầu Valley, Ap Bia Mountain is a solitary massif, unconnected to the ridges of the surrounding Annamite range. It dominates the northern valley, towering some above sea level. Snaking down from
Hamburger Hallig is part of the Reußenköge municipality. Until 1899 though, Hamburger Hallig was administered as an unincorporated estate. Modern coastal management protects the west coast of Hamburger Hallig from further erosion. Today, there are three artificial hills () on Hamburger Hallig including one hill on the floodplains and one without buildings. The main "Warft" is located four kilometres west off the sea dike of Sönke-Nissen-Koog. It does not have a proper name. On it, there are three buildings: Kuhberg, the "cow hill", is located 300 m south of the main "Warft". It is a flat hill without buildings that serves as