The Baumberge and their immediate foothills are subdivided into natural regions as follows:
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*** 541.00 Osterwick Hills - 128 m; gently rolling, NW foothills, separated from the Schröppingen Ridge by the Vechte river
*** 541.02 Schöppingen Ridge - 158 m; N foothills of the Baumberge
*** 541.03 Baumberge''' - 188 m
*** 541.05 Altenberge Ridge - 117 m; NE gently rolling ridge, parallel to the Baumberge and Schöppingen Ridge, separated by the stream of the Steinfurter Aa
*** 541.07 Coesfeld-Darup Heights - 166 m; SW foothills of the Baumberge
Location
The Baumberge lie within the Münsterland district of Coesfeld running in a northwest to southeast direction between Billerbeck in the west, the Rosendahl villages of Darfeld in the northwest, Havixbeck in the east, Nottuln-Schapdetten in the southeast and Nottuln in the south, Schapdetten being situated on the southeastern slopes of the hills themselves. On the other side of the Nottuln–Billerbeck state road the hills are separated by a saddle from the Coesfeld-Darup Heights which are up to 166 m high, the southwest foothills of the southern slopes. To the north the Baumberge transition into the Schöppingen Ridge, which after depression of only a little over 100 m reach a height of 158 m at the Schöppinger Berg. The A 43 motorway runs past the Baumberge just 2 km to the south and the A 1 passes 8 km to the east. The northern part of the range is separated by the Baumberge Railway.
Landscape
The Baumberge rise over the otherwise flat landscape to around 100 m reaching their highest point in the Westerberg ; whose summit is crowned by the Longinus Tower. Typical of this landscape a relatively level and treeless plateau with steep wooded edges of uniform height. The plateau is sparsely populated due to its aridity. The highest elevations around the Baumberge are the Schöppinger Berg near Schöppingen at 157.6 m, Bentheim Ridge near Bad Bentheim at 91.9 m the Gildehaus Ridge west of it near Gildehaus at around 80 m, the Altenberge Ridge at 113.0 m and the Buchenberg near Burgsteinfurt at 110 m.
Karst hills
The substratum of the Baumberge consists of a calcareous sandstone that is very porous. As a result, rainwater on the plateau soaks away to a great depth. The farms here have, for centuries, had to bore wells 40 m to 50 m deep to collect drinking water – frequently, however, they had to use rainwater cisterns until, in the early 1970s, a drinking water main was laid to them. The rainwater that drains away reappears at the edges of the Baumberge in spring horizons again; sometimes even entire streams can appear at the surface after just a few metres. Several other features of a karsthill range like ponors and sinkholes are also found in the Baumberge.
