Yesterday I saw several thick swarms of small bugs south of Klamath Lake just north of the Calif border just before sun down. They were above trees and a small creek or river along the highway. They were in columns about 6 - 8 inches across and probably 6 to 8 feet tall in their formation. I had not seen anything like it before, and was wanted to ask about what kind of bugs they were. Unfortunately it was not possible to stop to get any photos. Any ideas?