Did you know that .. Lava is not the same as magma. We often use the terms interchangeably. In fact, there is a differentiation.
The red-hot magma masses are located under the earth’s crust. Inside of Mount Etna there are 3 magma chambers. The largest of the three is 30 km in the deep, the middle about 10 km above the first and the smallest about 2 km below the highest point of the volcano. In this chamber, the magma accumulates in small holes in the rock.