Meteo:                                             Associazione gestori rifugi Valle d'Aosta

                                      *  Nimbus

                                      *  Wetterzentrale                                                               

                                      *  Snow forecast                                                                                                                                                                                                    

                         Operatori professionisti:                                

                          * Società delle Guide di Gressoney

                          *  Scuola di Alpinismo Monte Rosa

                     *  Interguide

                   Servizi:

                       *  Associazione informazioni accoglienza turistica

                       *  Gressoney Incoming