Plot: In the seventh episode of SuperQuark, the latest documentary in the Ushuaia nature series, which will make us meet extraordinary wild birds, griffon vultures, in the open sky of the Pyrenees. Nicolas Hulot, with his crew, flying almost like a bird without an engine or propeller, relying on a few square meters of fabric and sharing with the large griffon vultures the hot air currents that allow them to glide over cliffs and valleys, will be guided towards another treasure, this time underground: one of the most beautiful marine caves on the planet: Pas de Vallgornéra