Dark round hole in the clouds.It was a partly cloudy day somewhere outside of Culiacan.....and my high def video camera was more than 30 feet away at the time of the incident. Round hole in clouds that suddenly disappeared. No craft seen specifically but the dark hole looked like it had been caused by some type of craft. Thought it was a spot in my eye but when I looked around it stayed in the same position. Saw it in the distance and before I could tell anyone to look it just went away.