Etna DOC affects the maturation of the grapes and therefore there is a significant difference between the harvest period of the Etna and the rest of the Sicily areas. The soil is volcanic and very rich in minerals. It is formed by the disintegration of one or several types of lava of different ages and eruptive materials such as lava, ash and sand. Containing all these particles, the crops cultivated on Etna soil benefit from nutrients like iron, copper, phosphorus, magnesium and others. Etna DOC Etna is a "Denominazione di origine controllata" (DOC) for wine from the Etna region in Italy. Etna
Etna (sternwheeler) of "Etna" was substantially affected by the rise and fall of river levels, which were generally seasonal. Small craft like "Etna" on the Columbia River system were sometimes referred to at the time as the "mosquito fleet" "Etna" was built in Portland, Oregon in 1906 for Horace Campbell by the Portland shipyard of Joseph Supple. Campbell was a steamboat engineer with extensive experience on the Lewis and Lake rivers. "Etna" was exclusive of the extension of the deck over the stern, called the fantail, on which the stern-wheel was mounted. "Etna" had a beam of exclusive of the protective timbers