The Leeberg Niederhollabrunn in the market town of Niederhollabrunn in Lower Austria is a burial mound (Latin tumulus, plural tumuli) under monument (list entry) and nature conservation (list entry).
The Leeberg is round in plan and has a height of 237 m above sea level. A. and protrudes around 10 m from the surrounding plain. There is a cross on the top of the hill. The tumulus was filled in during the Hallstatt culture. An improper excavation took place in the 19th century, from which all finds have been lost.
An occurrence of the pale poplar rose (Alcea biennis), which is very rare in Austria and threatened with extinction, at the foot of the slope.
The hill consists of loess or loess clay. Due to the steepness and aridity of its slopes, the Leeberg could not and cannot be used for agriculture and valuable Pannonian dry grasslands formed. In the Austrian dry grass catalog these were classified as regionally important and represent a species-rich island in the now cleared arable landscape. [Source: Wikipedia]