The stone Gannor V, Lau, Gotland.
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| This little elongated stone was found in this groove.
The larger stone in which the grooves were made was hidden below the
water in a bog until the bog was dried up for agricultural purposes.
Then it was uncovered along with the little elongated stone.
Unfortunately they were blown up, but most of the pieces with grooves
were recovered. We think this the little stone was used to make the groove. The stone Gannor V, Lau, Gotland. |
| The grooves on a stone are not parallel. Instead they
are oriented in several directions, some grooves crossing other
grooves. These intersections would be very difficult to obtain unless
the engraving tool were fixed in some device like a pendulum. The stone Halor II, Raä 52, Rone, Gotland. |
| Reconstruction of a pendulum for making grooves.
Here the groove were cut in limestone. Four hours of grinding left
a one-cemtimetre-deep groove. Sand and water were used for grinding. At Sojds-museet in Burs, Gotland. |
A length cut through a groove. The machine above also makes the special shape at the ends.
©1996
Created by Sören Gannholm