Reminds me of my first encounter with the Gannets at Les Etacs off Alderney in the Channel Islands (off France). You follow the route down a valley, and just before you actually see them you are hit with a wall of sound! Unfortunately a few minutes earlier my camera battery gave out! It was a new one so I had not yet bought a spare. Les Etacs is probably the most accessible Gannetry in Europe. It is a rocky islet just 500m offshore.
I did get a later view from the clifftop showing the colony. Note that this was in September, after the breeding season:
John