Petersberg, Halle
| Petersberg | |
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The Petersberg seen from the direction of Löbejün
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| Highest point | |
| Elevation | 250.4 m above sea level (NN) (822 ft) |
| Coordinates | 51°35′41″N 11°57′55″E / 51.59472°N 11.96528°ECoordinates: 51°35′41″N 11°57′55″E / 51.59472°N 11.96528°E |
| Geography | |
 Petersberg
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| Geology | |
| Mountain type | Porphyry |
The Petersberg, at 250.4 m above sea level (NN), is the highest point in the district of Saalekreis in the German state of Saxony-Anhalt.
Its name is derived from St. Peter's Church, which is on the hill. Until the 14th century the Petersberg was known as the Lauterberg.
The Petersberg is located about 10 kilometres north of the German city of Halle on the River Saale not quite halfway between Halle and Köthen. The municipality of Petersberg with its hamlets of Drehlitz and Frößnitz lie on the hill. At the foot of the hill are the villages of Ostrau and Wallwitz as well as three small nature reserves. On the southern slopes of the hill is a small lake.
A stretch of the A 14 motorway runs past the Petersberg to the west and south, and the B 6 federal highway runs by to the southwest. They form a junction at Halle-Trotha, from where the Petersberg may easily be reached.
The Petersberg is the highest point of the Halle Porphyry complex. It was formed, like the other porphyritic domes in the surrounding area, during the Upper Carboniferous and Lower Permian by the solidification of numerous molten lava flows under the earth. In the slowly cooling lava, easily visible feldspar and quartz crystals were formed. The Petersberg consists of small-grained Halle porphyry – this hard rock is used mainly as a raw material for the manufacture of ballast and gravel.
The present shape of the hill is a result of the last ice age. The surrounding loose rock was cleared away by the ice sheet leaving the hard porphyritic core behind. The top of the hill stood clear of the glacier as a nunatak.
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