Unlike olives that shrivel up after curing, these are fully mature olives that are not picked... they ripen and shrivel on the tree. Nets are placed under the trees and the olives fall off when fully ripe. The wrinkling is their natural state. They are the only olives that can be eaten directly from the tree, but are dry cured for commercial use. Most throubes come from the Greek island of Thassos and from Amfissa.Internationally offered under many names depending on their origin (e.g. Amfissa, Thassos).