La Vaca is an underwater tunnel passing through the big island of the “Meda Gran” from North to the South! The tunnel is approximately 30 meters long and 5 meters wide. The entrance of the tunnel on the South side is situated at 12 meters deep. Its significant brightness not only allows divers to see the other side but also to take some amazing underwater pictures! La Vaca is full of groupers, including a big really big one that always hangs around the entrance!