Praia do Aventureiro.

Praia do Aventureiro sits on Ilha Grande's exposed south coast, the side that takes the full brunt of South Atlantic swell. The wave is a left-hand point break peeling off the sand beside Pedra da Tartaruga, the boulder locals call Turtle Rock, working best on an east groundswell with a west offshore wind holding the face up through any tide. A cold front pushing southwest wind through can send the swell well overhead, turning a manageable point into serious size. Getting here is the whole story: Aventureiro sits inside a sustainable development reserve, reachable only by a two-hour boat ride from Angra dos Reis followed by a steep 3.5 kilometre trail from Provetá, or a direct charter to the beach. Visitor numbers are capped and a free entry permit must be arranged in person before travelling. It is the island's second most surfed break after Lopes Mendes, so the point crowds up fast whenever conditions line up, though the reserve's limits and the effort required keep it quieter than the mainland.

The swell wraps a lone boulder called Turtle Rock and peels down a stretch of sand two hours by boat from anywhere else.