The Keyhole Nebula is a small, dark nebula within the larger Carina Nebula, located about 7,500–8,000 light-years from Earth. Measuring approximately 7 light-years across, it is composed of dense gas and dust that block light from the surrounding bright emission nebula. Its structure is influenced by the powerful winds and radiation from nearby massive stars, including the enigmatic Eta Carinae. Situated in a highly active star-forming region, it plays a role in the birth of new stars and serves as a key site for studying the interplay between massive stars and their surrounding environments.