NASA's Hubble Center describes this "pillar of gas and dust" that lies within the Carina Nebula.
I had to look up why the Carina Nebula was so named, because the word is used in a number of different settings. In this case it was because the Carina constellation is located in the keel part of the Argo Navis constellation.
Wikipedia mentioned that a part of the Carina Nebula is called the Keyhole Nebula, and the photo of THAT is so interesting that I've posted part of it separately below!
Image credit: NASA, ESA, and M. Livio and the Hubble 20th Anniversary Team (STScI). Via.