Here the route crosses the Rio Gaier (in the locality named Ponte sul Gaier). The erosive action of the stream on the dark, stratified rocks of the Hochwipfel Formation is evident. These rocks are more erodible than limestones and in some places the torrent’s incision takes the shape of the gorge.

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The Hochwipfel Formation
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The Visitor Centre of the Carnic Alps Geopark