Does this look suspicious?

Or is it a good thing??

We found these 2 patches on our first inspection at home. It looks like somebody did some rear sag reinforcement even though there is no other real evidence that it was needed. Maybe it is for something else and we should be scared! We missed this on our initial inspections because this area was covered by sagebrush.

We will have to remove these, repatch with a better looking patch and use Olympic rivets instead of these leaky buggers. We will know for sure what evil lurks beneath when we do that.