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Beatenberg Tourismus                                       www.beatenberg.ch

SAC Ledifluh                                                               www.sac-ledifluh.ch

SAC CAS Zentralverband                                         www.sac-cas.ch

Schnee- und Lawineninfo                                        www.slf.ch

Wetter                                                                            www.meteoschweiz.ch

Gipfelbuch                                                                    www.gipfelbuch.ch

Schweizer Bergführer Verband                             www.4000plus.ch

Naturfotograf;  Urs Grossniklaus                         www.nature-pics.ch/