About the same time ley lines were first introduced by Alfred Watkins (1855–1935) in the 1920s, a German evangelical parson named Wilhelm Teudt proposed a similar theory he called heilige linien (holy lines) that linked a number of standing stones, churches, crosses, and other objects of spiritual significance in Germany. Teudt's holy line theory met the same fate as Watkins's ley lines. There were so many possibilities for connecting a variety of objects on a landscape that the odds were better of finding alignments than not finding them.
Teudt made another observation that had more lasting significance. He noted that an ancient chamber constructed in the naturally formed megaliths called the Extersteine had a circular window that formed a point where rays of light at the midsummer solstice shone through, and where the moon was visible when it reached its northernmost position. He believed the Neolithic peoples (before 2000 B.C.E.) had used the site as an astronomical observatory and a calendar.
The Extersteine, which lies at the approximate latitude as Stonehenge in Great Britain, is a natural site of five sandstone pillars rising 120 feet above an area filled with caves and grottoes. It served as a ritual center for nomadic reindeer hunters, and later was the site of pagan rituals until the eighth century, when such rituals were forbidden by law. Christian monks took over the site and set up crosses and reliefs depicting biblical scenes. They abandoned it after about 1600. Many people continued to visit the Extersteine, claiming they were aware of its energy and that their physical ailments had been cured by walking among or rubbing against the stones.
"Earth Mysteries." [Online] http://www.religionandnature.com/encyclopedia/samples/Earth_mysteries.htm.
Magin, Ulrich. "Wilhelm Teudt and His Holy Lines." The Ley Hunter. No. 133. [Online] http://www.leyhunter.com/new/win.htm.