Bernese Oberland date cattle go up the alp?

Yes, determined locally, and not on a fixed date.

For Gimmelwld specific information on this:
http://www.gimmelwald.ch/english/seasons/alps.htm

Depending on the weather and the growth of the mountain grasses, this seems to take place from late May to Mid-June. We were in Lauterbrunnen the first week in June last year. We stayed at the Hotel Silberhorn and we saw farmers walking 6-8 cattle past the front of the hotel each of the 3 mornings we were there. It's usually about 7:30am. When visiting Muerren during the day, we saw cattle being walked through up there as well. It's not just one day; it's several. You'll hear them some distance away by their distinctive and melodic Swiss cow bells.

transhumance

http://en.wikipedia.org/wiki/Transhumance

... a bit of information... P

thanks for the info