Holzgerlingen () is a municipality in the German Federal State of Baden-Württemberg. It is located in district of Böblingen. Geography Holzgerlingen, with its population of 12,700, lies in a clearing in the Schönbuch, a large forest in the state of Baden-Württemberg. It is south of the city of Böblingen. The old city center lies about 475 m (1560 ft) above mean sea level on a watershed. The source of the Aich River is located in the southeast of Holzgerlingen, the Aich is flowing east and feeding the Neckar River at Nürtingen. The source of the Würm River is located west of the city on administrative area of Altdorf, the Würm is flowing westwards merging with the Nagold River and Enz River in Pforzheim. Climate Holzgerlingen, like many cities in southern Germany, and the Schönbuch region particularly, possess a temperate climate with four distinct seasons. Throughout the year, minimal temperatures range from between 3 °F and 39 °F (−16 °C to 4 °C) during the night in January and February, the coldest months of the year, to between 65 °F and 93 °F (18 °C to 34 °C) during July and August afternoons. The wettest month of the year is November, when frequent storm systems blowing in off of both the North Sea and the Atlantic Ocean. During November, 5.00in (127 mm) of precipitation falls, mostly as rain. Snow does fall in the region, but because daytime temperatures even in Winter are frequently above 32 °F (0 °C), long-lasting snow cover is unusual. The driest month of the year is September, when only 2.95in (75 mm) of precipitation occurs. In a normal year, precipitation totals 49.68in (1262mm). History The history of the settlement goes back to Neolithic times, and it is thought that the city was founded by Celts sometime in the period between 550 BC and 50 BC. Sometime around 100 AD, the Romans conquered the area around the city, although they were in turn overthrown by Alemannic tribes in the vicinity of 300 AD. In Germany, because many cities are extremely old and dating is inexact, a city's official history is considered to begin at the first time it is mentioned in writing. Holzgerlingen was first mentioned in the year 1007 in a history written by the Bishop of Bamberg during the reign of Henry II of the Holy Roman Empire. The city was in the possession of the