Canary Islands ocean in the middle of the islands of La Gomera, Tenerife and La Palma; where the laurisilva forests grow. The seven major islands, one minor island, and several small islets were originally volcanic islands, formed by the Canary hotspot. The Canary Islands is the only place in Spain where volcanic eruptions have been recorded during the Modern Era, with some volcanoes still active (El Hierro, 2011). Volcanic islands such as those in the Canary chain often have steep ocean cliffs caused by catastrophic debris avalanches and landslides. The Teide volcano on Tenerife is the highest mountain in Spain, and the
La Gomera the subsequent immigration, genetic footprints of the first settlers of the Canary Islands persist in the current inhabitants. Parallelling mtDNA findings (50.1% of U6 and 10.83% of L haplogroups), the largest average Northwest African contribution (42.50%) was found for the samples from La Gomera. According to Flores et al. (2003), genetic drift could be responsible for the contrasting difference in Northwest African ancestry detected with maternal (51% of Northwest African lineages) and paternal markers (0.3–10% of Northwest African lineages) in La Gomera. Alternatively, it could reflect the dramatic way the island was conquered, producing the strongest sexual asymmetry in the