sentences:  Herschweiler-Pettersheim lies in the Western Palatinate in the upper Ohmbach valley, which forks to the northwest into the Langenbach valley and to the northeast into the Klingelbach hollow.At the fork, the Harzhöhe climbs from 275 m above sea level to a 372 m-high sloping terrace and onwards to an elevation of 412 m above sea level at the top.Because it is so windswept, four wind turbines were installed on the mountaintop in late 2001.