The giare are basalt plateaus that rise unexpectedly from the plain of the country, as huge natural fortresses. Gesturi's Giara (in Sardinia language Sa jara manna) is the bigger: a plateau of 45skm rising up to about 600m. The plateau has an echo-system entirely different from the one of the surrounding country, with very many species endemic and autochthonous. [ 1 of 28 ]