The Gruta do Zé Grande is a cave located in Serretinha, situated in the civil parish of Feteira, municipality of Angra do Heroísmo, in the Portuguese archipelago of the Azores. It is a lava tube created from the lava flows that extended to the coast, 60m (200feet) long, 3.8m (12.5feet) wide and 2.1m (06.9feet) tall.