The area of Torre del Filosofo is the best place to observe the Etna summit craters. However, it is a place of continuous eruptions, especially during the last 20 years, and their shape and profile are constantly changing. Take a good look at them and perhaps even take a photograph, because next time they will not be the same!
Try sitting on the cones from 2002-03, located in the Torre del Filosofo area. Though more than 15 years have passed since the eruption, you will still feel warmth coming from the ground. This is caused by the gases of the cooling magma down below, which still maintains temperatures of around 40-50°C.
In the Torre del Filosofo area, not only will you smell the volcano gas coming from the summit craters, but a large part of it escapes from just under your feet. Close your eyes and try to smell this harsh odour.
If you have come to this area during a period of eruptions or explosions from the summit craters, you can hear them distinctly. There will be a succession of explosions every 5-10 minutes, making you turn your head towards the craters!