The island is one of the most densely wooded islands in the Adriatic and is a veritable botanical exhibition, with plants not native to the island. The Komrcar park, with its laurel, poplar, cypress, Indian fig-tree, rosemary, pine and hundred-year-old agave is now the pride of Rab. Its more than 300 freshwater springs provide a valuable water supply to the population of the island--which, in contrast to most of the Adriatic islands, is increasing, in part because of good communications with the mainland. Because of these numerous springs, Rab is considered to be the greenest island in the Adriatic. Rab belongs to the group of Kvarner Archipelago Islands of the North Adriatic. Its winters are pleasant and mild, and the summers warm, with about 2500 hours of sunshine a year. The mean air temperature is 26C in the summer and 10 C in the winter. The Kamenjak range (408m) protects the greater part of the island from cold north-eastern winds (bora or bura), and the temperature hardly ever drops below zero (centigrade). In the summer the mistral wind has a cooling effect on the the island.