The Trunk Nebula (IC 1396A) is a dark nebula embedded within the large emission region IC 1396, located in the constellation Cepheus, about 2,400 light-years away from Earth. Often called the “Elephant’s Trunk Nebula,” it is a dense column of gas and dust silhouetted against the glowing ionized hydrogen of the surrounding H II region. The nebula is shaped by powerful stellar winds and intense ultraviolet radiation from nearby massive stars, particularly a bright O-type star in the center of IC 1396. This process compresses the gas, triggering star formation inside the trunk. Several young stars and protostars have been detected within its obscured interior, making it a classic example of a stellar nursery. Spanning roughly 20 light-years in length, the Trunk Nebula is a popular astrophotography target, striking for its intricate shape against the glowing backdrop.