It is the signpost just nearby the dead-end hiking trail that has Belchenflue written on.

Along with the peak of the same name in Alsace (Alsatian Belchen) and Black Forest (Black Forest Belchen), it allowed the establishment of the winter and summer solstice.

[1] As is the case with much of the Jura range, the cliffs are formed of hard oolithic limestone, which has been exposed as the softer stone above it has eroded.

The pass forms the divide between the watershed of the Aare in the south and the Ergolz in the north.

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