People: Specialized and passionate guides (geologist and naturists).
Languages: Italian and English (on demand Spanish and French)
Requirements: Advise against they are not in good health in special way with cardio-respiratory problems
Variations: in not good weather condition or not favourable organization the guide could choice to change something on the itinerary
Trekking shoes (sneakers in Summer time)
Clothing according to the season and the temperature range of 15° C.