Vhawk:

I know exactly what you heard, although not what the crashing noise was. The call you heard was either a barred owl or a cross barred-spotted owl, or perhaps even a spotted owl. THey make crazy calls that reverberate through the forest like a mad man. They sound like a pack of coyotes, mixed in with some monkeys, and some owls. Historically these calls scared Indians pretty badly too. But no doubt, I hear them all the time, that was an owl. If it is black lake near Oly, then it is probably a barred owl or a hybrid. Nontheless their calls are erie and sometimes they will call for hours on end, just echoing throughout the forest.

take care.