Editing Heidelberg (section)

===Early history===
Between 600,000 and 200,000 years ago,{{Citation needed|date=April 2010}} "[[Homo heidelbergensis|Heidelberg Man]]" died at nearby [[Mauer (Baden)|Mauer]]. His jaw bone was discovered in 1907. Scientific dating determined his remains as the earliest evidence of human life in Europe. In the 5th century BC, a [[Celts|Celtic]] fortress of refuge and place of worship were built on the {{lang|de|Heiligenberg}}, or "Holy Mountain". Both places can still be identified. In 40 AD, a fort was built and occupied by the 24th Roman cohort and the 2nd [[Cyrenaican]] cohort (CCG XXIIII and CCH II CYR). The late Roman Emperor [[Valentinian I]], in 369 AD, built new and maintained older ''[[castra]]'' (permanent camps) and a signal tower on the bank of the [[Neckar]]. They built a wooden bridge based on stone pillars across it. The camp protected the first civilian settlements and was eventually captured by [[Germanic people|Germanic tribes]]. The local administrative center in Roman times was the nearby city of Lopodunum, today known as [[Ladenburg]].