we had to the lake's northern shore, to macedonia. here we see the water level has fallen alarmingly. this person has recorded the level from the wall of his house. >> in the past 30 years, the water level has dropped more than 8 meters. this is the high water marks. global warming is to blame. that hardly ever rains any more. >> that is not the only reason the lake is drying up. macedonian and greek farmers use the like to irrigate their fields. since fishing is banned, there are plenty of farmers. >> people from six villages in the area worked in the fishing industry. no private investors stepped in when the state run companies closed down. >> he now makes money by poaching. tourism is still rare around lake prespa. this family want to attract more guests. they show us their favorite island, an enchanting place where people were already living 2500 years ago. how much longer will it take before tourists discover this natural pearl? >>> the italian mafia has traditionally limited its activities to sicily and the south of the country,