It's stars versus gas mountains in NGC 2174 and the stars are winning. More precisely, the energetic light and winds from massive newly formed stars are evaporating and dispersing the dark stellar nurseries in which they formed. The above image from the Hubble Space Telescope shows a dense interior region which spans only about three light years while adopting a colour map that portrays otherwise red hydrogen emission in green hues and emphasizes sulfur emission in red and oxygen in blue. Credit: ESA, Hubble, NASA