Bug Rock is a location from The Legend of Zelda: Skyward Sword. It is an island located within the Thunderhead that, as its name implies, houses a great variety of bugs. After Link defeats Bilocyte, Strich can be found at Bug Rock during the day, where he runs the Bug Heaven mini-game. It is worth noting that, prior to defeating Bilocyte, the only bugs found here are Deku Hornets.
A Goddess Chest containing a Piece of Heart can also be found here, though Link cannot open it until after activating its corresponding Goddess Cube.