Eccodals
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The approximately 12.0 kilometer long Ekkodalen ( German "Echotal" ) in the center of Bornholm , the so-called Almindingen (von Allmende ), is the largest and longest of the fissure valleys on the Danish island. It has an average width of 60 m. The old name of the Ekkodalen is "Styrtebakkerne".
The crevice valleys were created because tensions in the subsoil caused the base rock to burst. Because of its lower strength, the material in the rift valley has been weathered or eroded by erosion and steep walls have formed. Sometimes cracks are filled with magma from the earth's interior, the so-called diabase ducts . An example of this is the Kelså diabase walk. Kelså diabase is only occasionally exposed in the area, but the course of the occurrence along the fault zone across Bornholm from Saltune in the north to Lobbæk in the south has been proven by means of geophysical measurements. The valley got its current shape through the action of the glaciers that glided over Bornholm during the Quaternary Ice Ages, the traces of which are still visible in the form of glacier scrapes in some places in the rocks of the valley flanks.
Hiking trails run through the Ekkodalen and above the vertical cliffs. Ekkodalen is known for the echo that sounds when you shout against the rocks. From the "Loklippen" you can see to the southeast over the "Vallensgård mose", a bog that lies at the intersection of two fault zones, to the Dueodde Fyr (lighthouse). In the north of the valley is the " Gamleborg " (old castle) on a hill , at the south end is the boulder Dronningesten. The "Jægergrotten" is located near the end of the valley. The younger Lilleborg Castle is only a few kilometers away.
literature
- Peter Gravesen: Bornholm (published in the Geologisk set series ) - 208 p., Numerous. Fig. And maps, Geografforlaget, Brenderup (DK) 1996.
Web links
Coordinates: 55 ° 6 ′ 33.8 ″ N , 14 ° 54 ′ 6.7 ″ E