Bad valley Osc

The disastrous valley before we started that caused a waterfall to come down on top of the owners bed.

The disastrous valley before we started

Here is a perfect example of what makes one verrrry bad valley. Way too shallow, tin closes in on the valley blocking debris from exiting hence creating a damming effect and water back-up, 5 pieces jointed together that were never sealed and were overlapped less than 2 inches, then the final sin was there was no finger on the wings of the valley that would help prevent this back up.