Jun 12, 2016 - 7:39 AM
I'm not that familiar with that region, so you may want to contact the local tourist agency at www.valdanniviers.ch for details. The trails around Roc de la Vache reach up to 2600 m. It's tricky to have a guess; they may just be accessible around that time. It depends on the weather of the next two weeks. In any case, there will be plenty of other trails to enjoy, particularly north of Zinal.