
Puy de Sancy is the largest peak in the Avergne, and dominates the area around Mont Dore.
The summit is accessible by a cable car and a short ascent, but without snow, the area just below it is visibly heavily damaged by piste building, and the erosion from huge numbers of tourists. Despite this, the views are worth the trip.
If you are up to it, an excellent route to the top ascends from the "preserved valley" to the north east. The full circular route gives a full days hiking of about 14 km distance and 800 m ascent and descent. Free! (unless you take the cable car). edit