I own a 07 Grand Prix GT. Last night I was traveling down a road about 40MPH and everything was going good until I went over this small hill, and the road turned to dirt/gravel. The rain had eroded two decent sized holes on the dirt road, and my car landed down this small hill and hit the front undercarriage really hard, so much that my girlfriend's family thought I had crashed as they live down the road. I looked underneath and it seems like there is a front skid plate. The skid plate is dented on the right side with rocks mashed in between, along with the underside of the front bumper all scratched. There are no leaks and all the cases look fine.
Now, what kind of damage could have potentially been done without me noticing? Any ideas?