The Integrated Flux Nebula near M81

These are a thought to be dust clouds high above the Milky Way that are illuminated by the light from the galaxy core. As a whole they make up the largest reflection nebula in the Milky Way.
The inverted image shows nebulosity better. This area has been coined the Volcano Nebula.
This was taken under excellent condition for the UK, but it really needs more exposure under even clearer conditions. New Mexico would be better.