08- Welten, Limburg, 30-07-1996.
The diameter of this formation is 17.20 metre.
- 01- Width ring 1: 0.70 metre.
- 02- Width ring 2: 0.45 metre.
- 03- Diameter circle: 5.15 metre.
Measurements: Jaap van Etten.
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08- Welten, Limburg, 30-07-1996.
The diameter of this formation is 17.20 metre.
Measurements: Jaap van Etten.
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