A tripod dolly is a type of camera accessory that is used to support and move a photo or video tripod. It typically consists of a platform with wheels that allows the tripod to be rolled smoothly and easily, providing greater stability and flexibility when shooting video or photos. Some tripod dollies also have adjustable legs, allowing the user to level the tripod on uneven surfaces. They are often used by photographers and videographers to create smooth and steady camera movements, and can be particularly useful in situations where the tripod needs to be moved frequently.