Barnard 72 (aka...Snake nebula) & Barnard 68 (aka...The Ink spot)
Constellation: Ophiuchus
Barnard 72 is a large feature roughly the same angular size of the full moon. Barnard 68, the Ink Spot just below the snakes head in this photo. Dark nebulae are not unlike what we normally think of as a nebula. The are expansive clouds of gas and dust that could potentially form stars in the future. With no form of illumination, the only way that these nebulae can be observed is when they obscure the light of objects behind them.
Taken 9/7/18 at Headlands International Dark Sky Park in Mackinaw City, MI by Russell Kille on a CPC 1100 with Hyperstar @ F2 and ZWO ASI294MC Pro camera