This log was not visible. Had run over it numerous times cutting grass in the yard it was in. I was riding along cutting grass when suddenly my mower stopped. I disengaged blades and restarted engine. Then backed up to see what I had hit. Mower front end started raising off the ground. This log was sticking out the front of the deck. I had to completely remove the blade to get it out.
Dang you are lucky that you didn't break something. I have hit stuff mowing the fields at the farm before due to high grass but nothing like that. I might be tempted to leave the blade in the log as a reminder and as "yard art".
Tom