La Vaca

La Vaca is a single emphatic statement: a tunnel bored clean through the rock, entered in dimness and finished in a widening cone of blue. Conger and moray eels share crevices along the passage, and the resident groupers have a habit of escorting divers through as if supervising visitors. The seaward walls on either side drop through coralligenous growth where nudibranchs and forkbeards reward slow searching. Paired with a second islet site, it makes the definitive Medes morning — geology first, fish density after.

اللحظة التي جئت من أجلها: The through-tunnel itself, escort groupers, coralligenous walls either side

التضاريس: A natural tunnel through the limestone with entrances at different depths, flanked by walls and boulder slopes

نقطة الدخول: Short ride from L'Estartit; the tunnel mouth sits off the Meda Gran's seaward face.

المخاطر: Overhead section and queueing divers at peak times; mind surge near the shallow entrance after wind.

التصاريح والقواعد: Park quota and authorized-center rules apply.

الحفاظ على البيئة البحرية: No-take reserve; buoyancy discipline protects the tunnel's encrusting life.