Davide was an exceptionally knowledgeable and skillful guide. The conditions were right for us to hike from the Refugio up to about 2400 meters. Davide displayed  extensive knowledge of the many eruptions that have taken place over the years. He also has an excellent grasp of Etna's geology, often reaching down to pick up particular rocks and describing where they came from, their age, and other characteristics. Most of all he is very friendly and easygoing. We highly recommend him as a very professional guide.