has been affected by rising and falling of sea level. Changes caused by the mixing of fresh water from the limestone and salt sea water include larger limestones cavities and fluctuations in different colours. Grotta del Fico is a karst cave located on the Selvaggio Blu between Santa Maria Navarrese and Cala Luna. Grotta del Fico is accessible by boat or walking. It was discovered by fishermen in the early 20th century, and opened to the public with guided tours in 2003. Inside Grotta del Fico there is a lake with clear water which reflects inside the cave. The lake is created by karst water that flows in the main part of the cave and fills up the lake. History 1963: Peppino Cicalò conceived the initial route after some exploratory excursions. He completed the first part of the route, leaving from Fonni and passing through Punta la Marmora to Baunei. He also thought to go through the Supramonte northwards. After meeting Mario Verin, while studying in Florence, he developed the Selvaggio Blu, with the help of his partner. 1981: two expert climbers, Alessandro Gogna and Maurizio Zanolla, opened the first climbing route in this area with their ascent of the Aguglia of Goloritzè, a limestone monolith on the sea cliffs. Their route traversed from Cala Luna to Baunei and is regarded as the original core of the Selvaggio Blu, although this name was not used until 1988. 1985: an Italian national travel magazine, Airone, featured an article by Jacopo Merizzi about the trek, publicizing it to a wider audience. 1986: Peppino Cicalò proposed to the mayor of Baunei to connect together the already existing treks to create a new, single longer one. Mario Verin also became interested in the wild Supramonte at this period. May 1987: Cicalò invited his friend Mario Verin to Santa Maria Navarrese to walk from Pedra Longa to Cala Sisine, by following the edge of the cliffs (an idea from their youth). In two days, the pair managed to get to Cala Goloritzè, naming their new trek "Da guglia a guglia". They had limited maps available, and dense macchia Mediterranea to negotiate. They attempted to identify the easiest paths to make the route accessible to subsequent visitors, requiring them to choose between including a route along the cliffs, a source of danger for non-expert climbers, or to proceed in the less scenic macchia. After this, they